text: // Copyright (C) 2017-2018 Internet Systems Consortium, Inc. ("ISC")
  //
  // This Source Code Form is subject to the terms of the Mozilla Public
  // License, v. 2.0. If a copy of the MPL was not distributed with this
  // file, You can obtain one at http://mozilla.org/MPL/2.0/.
  
  #include <config.h>
  
  #include <cc/command_interpreter.h>
  #include <cc/data.h>
  #include <cc/simple_parser.h>
  #include <cc/cfg_to_element.h>
  #include <testutils/user_context_utils.h>
  #include <testutils/user_context_utils.h>
  #include <dhcp/tests/iface_mgr_test_config.h>
  #include <dhcpsrv/cfgmgr.h>
  #include <dhcpsrv/parsers/simple_parser6.h>
  #include <dhcp6/dhcp6_srv.h>
  #include <dhcp6/ctrl_dhcp6_srv.h>
  #include <dhcp6/json_config_parser.h>
  #include <dhcp6/tests/dhcp6_test_utils.h>
  #include <dhcp6/tests/get_config_unittest.h>
  
  #include <boost/algorithm/string.hpp>
  #include <gtest/gtest.h>
  
  #include <iostream>
  #include <string>
  #include <sstream>
  #include <list>
  
  using namespace isc::config;
  using namespace isc::data;
  using namespace isc::dhcp;
  using namespace isc::dhcp::test;
  using namespace isc::test;
  
  namespace {
  
  /// @name How to fill configurations
  ///
  /// Copy get_config_unittest.cc.skel into get_config_unittest.cc
  ///
  /// For the extracted configurations define the EXTRACT_CONFIG and
  /// recompile this file. Run dhcp6_unittests on Dhcp6ParserTest
  /// redirecting the standard error to a temporary file, e.g. by
  /// @code
  ///    ./dhcp6_unittests --gtest_filter="Dhcp6Parser*" > /dev/null 2> x
  /// @endcode
  ///
  /// Update EXTRACTED_CONFIGS with the file content
  ///
  /// When configurations have been extracted the corresponding unparsed
  /// configurations must be generated. To do that define GENERATE_ACTION
  /// and recompile this file. Run dhcp6_unittests on Dhcp6GetConfigTest
  /// redirecting the standard error to a temporary file, e.g. by
  /// @code
  ///    ./dhcp6_unittests --gtest_filter="Dhcp6GetConfig*" > /dev/null 2> u
  /// @endcode
  ///
  /// Update UNPARSED_CONFIGS with the file content, recompile this file
  /// without EXTRACT_CONFIG and GENERATE_ACTION.
  ///
  /// @note Check for failures at each step!
  /// @note The tests of this file do not check if configs returned
  /// by @ref isc::dhcp::CfgToElement::ToElement() are complete.
  /// This has to be done manually.
  ///
  ///@{
  /// @brief extracted configurations
  const char* EXTRACTED_CONFIGS[] = {
      // CONFIGURATION 0
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 1
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 2
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 0,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:3::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:4::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 3
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1024,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 100,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:3::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 34,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:4::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 4
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 2,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 3,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:3::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 4,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:4::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 5
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3,\n"
  "                \"rebind-timer\": 2,\n"
  "                \"renew-timer\": 1,\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 6
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"interface\": \"eth0\",\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 7
  "{\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"interface-id\": \"foobar\",\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 8
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/96\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1:0:abcd::/112\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::1 - 2001:db8:2::ff\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::300 - 2001:db8:2::3ff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 9
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 10
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 128,\n"
  "                        \"prefix\": \"2001:db8:1::\",\n"
  "                        \"prefix-len\": 64\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 11
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"excluded-prefix\": \"3000:0:0:0:1000::\",\n"
  "                        \"excluded-prefix-len\": 72,\n"
  "                        \"prefix\": \"3000::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 12
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 80,\n"
  "                        \"prefix\": \"2001:db8:1:01::\",\n"
  "                        \"prefix-len\": 72\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 88,\n"
  "                        \"prefix\": \"2001:db8:1:02::\",\n"
  "                        \"prefix-len\": 72\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 96,\n"
  "                        \"prefix\": \"3000:1:03::\",\n"
  "                        \"prefix-len\": 72\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1:04::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/40\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 13
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8:1::\",\n"
  "                        \"prefix-len\": 64\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 14
  "{\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv6-address\"\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 15
  "{\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"uint16, ipv4-address, ipv6-address, string\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"record\"\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 16
  "{\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            },\n"
  "            {\n"
  "                \"code\": 101,\n"
  "                \"name\": \"foo-2\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv4-address\"\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 17
  "{\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": true,\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 18
  "{\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"sub-opts-space\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 19
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"subscriber-id\"\n"
  "            },\n"
  "            {\n"
  "                \"data\": \"01\",\n"
  "                \"name\": \"preference\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 20
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"option-data\": [\n"
  "                    {\n"
  "                        \"csv-format\": false,\n"
  "                        \"data\": \"ABCDEF0105\",\n"
  "                        \"name\": \"subscriber-id\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"data\": \"01\",\n"
  "                        \"name\": \"preference\"\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 21
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"subscriber-id\"\n"
  "            },\n"
  "            {\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 38,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 22
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\"\n"
  "            },\n"
  "            {\n"
  "                \"data\": \"192.168.2.1\",\n"
  "                \"name\": \"foo2\",\n"
  "                \"space\": \"isc\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 110,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            },\n"
  "            {\n"
  "                \"code\": 111,\n"
  "                \"name\": \"foo2\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv4-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 23
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"data\": \"11\",\n"
  "                \"name\": \"base-option\"\n"
  "            },\n"
  "            {\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\"\n"
  "            },\n"
  "            {\n"
  "                \"data\": \"192.168.2.1\",\n"
  "                \"name\": \"foo2\",\n"
  "                \"space\": \"isc\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"isc\",\n"
  "                \"name\": \"base-option\",\n"
  "                \"space\": \"dhcp6\",\n"
  "                \"type\": \"uint8\"\n"
  "            },\n"
  "            {\n"
  "                \"code\": 110,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            },\n"
  "            {\n"
  "                \"code\": 111,\n"
  "                \"name\": \"foo2\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv4-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 24
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"option-data\": [\n"
  "                    {\n"
  "                        \"csv-format\": false,\n"
  "                        \"data\": \"0102030405060708090A\",\n"
  "                        \"name\": \"subscriber-id\"\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"option-data\": [\n"
  "                    {\n"
  "                        \"csv-format\": false,\n"
  "                        \"data\": \"FFFEFDFCFB\",\n"
  "                        \"name\": \"user-class\"\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 25
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"112233445566\",\n"
  "                                \"name\": \"subscriber-id\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefix\": \"3000::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"aabbccddee\",\n"
  "                                \"name\": \"user-class\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefix\": \"3001::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"0102030405060708090A\",\n"
  "                                \"name\": \"subscriber-id\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"pool\": \"2001:db8:1::10 - 2001:db8:1::100\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"FFFEFDFCFB\",\n"
  "                                \"name\": \"user-class\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"pool\": \"2001:db8:1::300 - 2001:db8:1::400\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 26
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"option-one\",\n"
  "                \"space\": \"vendor-4491\"\n"
  "            },\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"option-two\",\n"
  "                \"space\": \"vendor-1234\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 27
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"data\": \"this is a string vendor-opt\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"vendor-4491\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"vendor-4491\",\n"
  "                \"type\": \"string\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 28
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"eth0\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 29
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"eth0\", \"eth1\", \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 30
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"relay\": {\n"
  "                    \"ip-address\": \"2001:db8:1::abcd\"\n"
  "                },\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 31
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ \"2001:db9::abcd\", \"2001:db9::abce\" ]\n"
  "                },\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 32
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"client-class\": \"alpha\",\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"client-class\": \"beta\",\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"client-class\": \"gamma\",\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:3::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:4::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 33
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"client-class\": \"alpha\",\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"beta\",\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"gamma\",\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:0::/40\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 34
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"client-class\": \"alpha\",\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8:1::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"beta\",\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8:2::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"gamma\",\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8:3::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8:4::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 35
  "{\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": true,\n"
  "            \"enable-updates\": true,\n"
  "            \"generated-prefix\": \"test.prefix\",\n"
  "            \"max-queue-size\": 2048,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": true,\n"
  "            \"override-no-update\": true,\n"
  "            \"qualifying-suffix\": \"test.suffix.\",\n"
  "            \"replace-client-name\": \"when-present\",\n"
  "            \"sender-ip\": \"3001::2\",\n"
  "            \"sender-port\": 778,\n"
  "            \"server-ip\": \"3001::1\",\n"
  "            \"server-port\": 777\n"
  "        },\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 36
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 123,\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 234,\n"
  "                \"pools\": [ ],\n"
  "                \"reservations\": [\n"
  "                    {\n"
  "                        \"duid\": \"01:02:03:04:05:06:07:08:09:0A\",\n"
  "                        \"hostname\": \"\",\n"
  "                        \"ip-addresses\": [ \"2001:db8:2::1234\" ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"data\": \"2001:db8:2::1111\",\n"
  "                                \"name\": \"dns-servers\"\n"
  "                            },\n"
  "                            {\n"
  "                                \"data\": \"11\",\n"
  "                                \"name\": \"preference\"\n"
  "                            }\n"
  "                        ]\n"
  "                    },\n"
  "                    {\n"
  "                        \"hostname\": \"\",\n"
  "                        \"hw-address\": \"01:02:03:04:05:06\",\n"
  "                        \"ip-addresses\": [ \"2001:db8:2::abcd\" ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"data\": \"2001:db8:2::abbc\",\n"
  "                                \"name\": \"dns-servers\"\n"
  "                            },\n"
  "                            {\n"
  "                                \"data\": \"25\",\n"
  "                                \"name\": \"preference\"\n"
  "                            }\n"
  "                        ]\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            },\n"
  "            {\n"
  "                \"id\": 542,\n"
  "                \"pools\": [ ],\n"
  "                \"reservations\": [\n"
  "                    {\n"
  "                        \"duid\": \"0A:09:08:07:06:05:04:03:02:01\",\n"
  "                        \"hostname\": \"\",\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"data\": \"2001:db8:3::3333\",\n"
  "                                \"name\": \"dns-servers\"\n"
  "                            },\n"
  "                            {\n"
  "                                \"data\": \"33\",\n"
  "                                \"name\": \"preference\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefixes\": [ \"2001:db8:3:2::/96\" ]\n"
  "                    },\n"
  "                    {\n"
  "                        \"hostname\": \"\",\n"
  "                        \"hw-address\": \"06:05:04:03:02:01\",\n"
  "                        \"prefixes\": [ \"2001:db8:3:1::/96\" ]\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:3::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 37
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 234,\n"
  "                \"pools\": [ ],\n"
  "                \"reservations\": [\n"
  "                    {\n"
  "                        \"duid\": \"01:02:03:04:05:06:07:08:09:0A\",\n"
  "                        \"hostname\": \"\",\n"
  "                        \"ip-addresses\": [ \"2001:db8:2::1234\" ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"data\": \"11\",\n"
  "                                \"name\": \"foo\",\n"
  "                                \"space\": \"isc\"\n"
  "                            }\n"
  "                        ]\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 38
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"mac-sources\": [ \"rfc6939\", \"rfc4649\", \"rfc4580\" ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 39
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"mac-sources\": [ \"client-link-addr-option\", \"remote-id\", \"subscriber-id\" ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 40
  "{\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"subnet\": \"2001:db8:1::/48\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:2::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"reservation-mode\": \"out-of-pool\",\n"
  "                \"subnet\": \"2001:db8:2::/48\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:3::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"reservation-mode\": \"disabled\",\n"
  "                \"subnet\": \"2001:db8:3::/48\"\n"
  "            },\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:4::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:4::/48\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 41
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"dns-servers\", \"remote-id\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 42
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 43
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 44
  "{\n"
  "        \"decline-probation-period\": 12345,\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 45
  "{\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 35,\n"
  "            \"hold-reclaimed-time\": 1800,\n"
  "            \"max-reclaim-leases\": 50,\n"
  "            \"max-reclaim-time\": 100,\n"
  "            \"reclaim-timer-wait-time\": 20,\n"
  "            \"unwarned-reclaim-cycles\": 10\n"
  "        },\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 46
  "{\n"
  "        \"client-classes\": [\n"
  "            {\n"
  "                \"name\": \"one\"\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"two\"\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"three\"\n"
  "            }\n"
  "        ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:1::1 - 2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:1::/64\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 47
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 48
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8::/64\",\n"
  "                        \"user-context\": { }\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 49
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8::/64\",\n"
  "                        \"user-context\": {\n"
  "                            \"lw4over6-bind-prefix-len\": 56,\n"
  "                            \"lw4over6-sharing-ratio\": 64,\n"
  "                            \"lw4over6-sysports-exclude\": true,\n"
  "                            \"lw4over6-v4-pool\": \"192.0.2.0/24\"\n"
  "                        }\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 50
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"pool\": \"2001:db8:: - 2001:db8::ffff:ffff:ffff:ffff\",\n"
  "                        \"user-context\": {\n"
  "                            \"lw4over6-bind-prefix-len\": 56,\n"
  "                            \"lw4over6-sharing-ratio\": 64,\n"
  "                            \"lw4over6-sysports-exclude\": true,\n"
  "                            \"lw4over6-v4-pool\": \"192.0.2.0/24\"\n"
  "                        }\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 51
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8::\",\n"
  "                        \"prefix-len\": 56\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 52
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8::\",\n"
  "                        \"prefix-len\": 56,\n"
  "                        \"user-context\": { }\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 53
  "{\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"prefix\": \"2001:db8::\",\n"
  "                        \"prefix-len\": 56,\n"
  "                        \"user-context\": {\n"
  "                            \"lw4over6-bind-prefix-len\": 56,\n"
  "                            \"lw4over6-sharing-ratio\": 64,\n"
  "                            \"lw4over6-sysports-exclude\": true,\n"
  "                            \"lw4over6-v4-pool\": \"192.0.2.0/24\"\n"
  "                        }\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8::/32\"\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 54
  "{\n"
  "        \"hosts-databases\": [\n"
  "            {\n"
  "                \"name\": \"keatest1\",\n"
  "                \"password\": \"keatest\",\n"
  "                \"type\": \"mysql\",\n"
  "                \"user\": \"keatest\"\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"keatest2\",\n"
  "                \"password\": \"keatest\",\n"
  "                \"type\": \"mysql\",\n"
  "                \"user\": \"keatest\"\n"
  "            }\n"
  "        ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"renew-timer\": 1000,\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 55
  "{\n"
  "        \"comment\": \"A DHCPv6 server\",\n"
  "        \"client-classes\": [\n"
  "            {\n"
  "                \"comment\": \"match all\",\n"
  "                \"name\": \"all\",\n"
  "                \"test\": \"'' == ''\"\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"none\"\n"
  "            },\n"
  "            {\n"
  "                \"comment\": \"a comment\",\n"
  "                \"name\": \"both\",\n"
  "                \"user-context\": {\n"
  "                    \"version\": 1\n"
  "                }\n"
  "            }\n"
  "        ],\n"
  "        \"control-socket\": {\n"
  "            \"comment\": \"Indirect comment\",\n"
  "            \"socket-name\": \"/tmp/kea6-ctrl-socket\",\n"
  "            \"socket-type\": \"unix\"\n"
  "        },\n"
  "        \"dhcp-ddns\": {\n"
  "            \"comment\": \"No dynamic DNS\",\n"
  "            \"enable-updates\": false\n"
  "        },\n"
  "        \"interfaces-config\": {\n"
  "            \"comment\": \"Use wildcard\",\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"comment\": \"Set option value\",\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"subscriber-id\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"comment\": \"An option definition\",\n"
  "                \"code\": 100,\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv6-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"server-id\": {\n"
  "            \"comment\": \"DHCPv6 specific\",\n"
  "            \"type\": \"LL\"\n"
  "        },\n"
  "        \"shared-networks\": [\n"
  "            {\n"
  "                \"comment\": \"A shared network\",\n"
  "                \"name\": \"foo\",\n"
  "                \"subnet6\": [\n"
  "                    {\n"
  "                        \"comment\": \"A subnet\",\n"
  "                        \"id\": 100,\n"
  "                        \"pd-pools\": [\n"
  "                            {\n"
  "                                \"comment\": \"A prefix pool\",\n"
  "                                \"delegated-len\": 64,\n"
  "                                \"prefix\": \"2001:db2::\",\n"
  "                                \"prefix-len\": 48\n"
  "                            }\n"
  "                        ],\n"
  "                        \"pools\": [\n"
  "                            {\n"
  "                                \"comment\": \"A pool\",\n"
  "                                \"pool\": \"2001:db1::/64\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"reservations\": [\n"
  "                            {\n"
  "                                \"comment\": \"A host reservation\",\n"
  "                                \"hostname\": \"foo.example.com\",\n"
  "                                \"hw-address\": \"AA:BB:CC:DD:EE:FF\",\n"
  "                                \"option-data\": [\n"
  "                                    {\n"
  "                                        \"comment\": \"An option in a reservation\",\n"
  "                                        \"data\": \"example.com\",\n"
  "                                        \"name\": \"domain-search\"\n"
  "                                    }\n"
  "                                ]\n"
  "                            }\n"
  "                        ],\n"
  "                        \"subnet\": \"2001:db1::/48\"\n"
  "                    }\n"
  "                ]\n"
  "            }\n"
  "        ]\n"
  "    }\n"
  };
  
  /// @brief unparsed configurations
  const char* UNPARSED_CONFIGS[] = {
      // CONFIGURATION 0
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 1
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 2
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 2,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 3,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:3::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 4,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:4::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 3
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1024,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 100,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:3::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 34,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:4::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 4
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 2,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 3,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:3::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 4,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:4::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 5
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 6
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"interface\": \"eth0\",\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 7
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"interface-id\": \"foobar\",\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 8
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/96\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1:0:abcd::/112\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 2,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::1-2001:db8:2::ff\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::300/120\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 9
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 10
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 128,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:1::\",\n"
  "                        \"prefix-len\": 64\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 11
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"excluded-prefix\": \"3000::1000:0:0:0\",\n"
  "                        \"excluded-prefix-len\": 72,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"3000::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 12
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 80,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:1:1::\",\n"
  "                        \"prefix-len\": 72\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 88,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:1:2::\",\n"
  "                        \"prefix-len\": 72\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 96,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"3000:1:3::\",\n"
  "                        \"prefix-len\": 72\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/40\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 13
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:1::\",\n"
  "                        \"prefix-len\": 64\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ]\n"
  "    }\n",
      // CONFIGURATION 14
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv6-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 15
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"uint16, ipv4-address, ipv6-address, string\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"record\"\n"
  "            }\n"
  "        ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 16
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            },\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 101,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo-2\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv4-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 17
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": true,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 18
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"sub-opts-space\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 19
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 38,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"subscriber-id\",\n"
  "                \"space\": \"dhcp6\"\n"
  "            },\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 7,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"01\",\n"
  "                \"name\": \"preference\",\n"
  "                \"space\": \"dhcp6\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 20
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [\n"
  "                    {\n"
  "                        \"always-send\": false,\n"
  "                        \"code\": 38,\n"
  "                        \"csv-format\": false,\n"
  "                        \"data\": \"ABCDEF0105\",\n"
  "                        \"name\": \"subscriber-id\",\n"
  "                        \"space\": \"dhcp6\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"always-send\": false,\n"
  "                        \"code\": 7,\n"
  "                        \"csv-format\": true,\n"
  "                        \"data\": \"01\",\n"
  "                        \"name\": \"preference\",\n"
  "                        \"space\": \"dhcp6\"\n"
  "                    }\n"
  "                ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 21
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 38,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"subscriber-id\",\n"
  "                \"space\": \"dhcp6\"\n"
  "            },\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 38,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 38,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 22
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 110,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\"\n"
  "            },\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 111,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"192.168.2.1\",\n"
  "                \"name\": \"foo2\",\n"
  "                \"space\": \"isc\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 110,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            },\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 111,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo2\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv4-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 23
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 100,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"11\",\n"
  "                \"name\": \"base-option\",\n"
  "                \"space\": \"dhcp6\"\n"
  "            },\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 110,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"1234\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"isc\"\n"
  "            },\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 111,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"192.168.2.1\",\n"
  "                \"name\": \"foo2\",\n"
  "                \"space\": \"isc\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"isc\",\n"
  "                \"name\": \"base-option\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"dhcp6\",\n"
  "                \"type\": \"uint8\"\n"
  "            },\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 110,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            },\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 111,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo2\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv4-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 24
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [\n"
  "                    {\n"
  "                        \"always-send\": false,\n"
  "                        \"code\": 38,\n"
  "                        \"csv-format\": false,\n"
  "                        \"data\": \"0102030405060708090A\",\n"
  "                        \"name\": \"subscriber-id\",\n"
  "                        \"space\": \"dhcp6\"\n"
  "                    }\n"
  "                ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 2,\n"
  "                \"option-data\": [\n"
  "                    {\n"
  "                        \"always-send\": false,\n"
  "                        \"code\": 15,\n"
  "                        \"csv-format\": false,\n"
  "                        \"data\": \"FFFEFDFCFB\",\n"
  "                        \"name\": \"user-class\",\n"
  "                        \"space\": \"dhcp6\"\n"
  "                    }\n"
  "                ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 25
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 38,\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"112233445566\",\n"
  "                                \"name\": \"subscriber-id\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefix\": \"3000::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 15,\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"AABBCCDDEE\",\n"
  "                                \"name\": \"user-class\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefix\": \"3001::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 38,\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"0102030405060708090A\",\n"
  "                                \"name\": \"subscriber-id\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"pool\": \"2001:db8:1::10-2001:db8:1::100\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 15,\n"
  "                                \"csv-format\": false,\n"
  "                                \"data\": \"FFFEFDFCFB\",\n"
  "                                \"name\": \"user-class\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"pool\": \"2001:db8:1::300-2001:db8:1::400\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 26
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 100,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"1234\",\n"
  "                \"space\": \"vendor-1234\"\n"
  "            },\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 100,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"space\": \"vendor-4491\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 27
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"always-send\": false,\n"
  "                \"code\": 100,\n"
  "                \"csv-format\": true,\n"
  "                \"data\": \"this is a string vendor-opt\",\n"
  "                \"name\": \"foo\",\n"
  "                \"space\": \"vendor-4491\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"vendor-4491\",\n"
  "                \"type\": \"string\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 28
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"eth0\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 29
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\", \"eth0\", \"eth1\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 30
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ \"2001:db8:1::abcd\" ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 31
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ \"2001:db9::abcd\", \"2001:db9::abce\" ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 32
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"client-class\": \"alpha\",\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"client-class\": \"beta\",\n"
  "                \"id\": 2,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"client-class\": \"gamma\",\n"
  "                \"id\": 3,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:3::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 4,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:4::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 33
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"client-class\": \"alpha\",\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"beta\",\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/80\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"gamma\",\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:3::/80\"\n"
  "                    },\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:4::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/40\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 34
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"client-class\": \"alpha\",\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:1::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"beta\",\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:2::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-class\": \"gamma\",\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:3::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    },\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8:4::\",\n"
  "                        \"prefix-len\": 48\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 35
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": true,\n"
  "            \"enable-updates\": true,\n"
  "            \"generated-prefix\": \"test.prefix\",\n"
  "            \"max-queue-size\": 2048,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": true,\n"
  "            \"override-no-update\": true,\n"
  "            \"qualifying-suffix\": \"test.suffix.\",\n"
  "            \"replace-client-name\": \"when-present\",\n"
  "            \"sender-ip\": \"3001::2\",\n"
  "            \"sender-port\": 778,\n"
  "            \"server-ip\": \"3001::1\",\n"
  "            \"server-port\": 777\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 36
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 123,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/80\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 234,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [\n"
  "                    {\n"
  "                        \"client-classes\": [ ],\n"
  "                        \"hostname\": \"\",\n"
  "                        \"hw-address\": \"01:02:03:04:05:06\",\n"
  "                        \"ip-addresses\": [ \"2001:db8:2::abcd\" ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 23,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"2001:db8:2::abbc\",\n"
  "                                \"name\": \"dns-servers\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            },\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 7,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"25\",\n"
  "                                \"name\": \"preference\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefixes\": [ ]\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-classes\": [ ],\n"
  "                        \"duid\": \"01:02:03:04:05:06:07:08:09:0a\",\n"
  "                        \"hostname\": \"\",\n"
  "                        \"ip-addresses\": [ \"2001:db8:2::1234\" ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 23,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"2001:db8:2::1111\",\n"
  "                                \"name\": \"dns-servers\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            },\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 7,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"11\",\n"
  "                                \"name\": \"preference\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefixes\": [ ]\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 542,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [\n"
  "                    {\n"
  "                        \"client-classes\": [ ],\n"
  "                        \"hostname\": \"\",\n"
  "                        \"hw-address\": \"06:05:04:03:02:01\",\n"
  "                        \"ip-addresses\": [ ],\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefixes\": [ \"2001:db8:3:1::/96\" ]\n"
  "                    },\n"
  "                    {\n"
  "                        \"client-classes\": [ ],\n"
  "                        \"duid\": \"0a:09:08:07:06:05:04:03:02:01\",\n"
  "                        \"hostname\": \"\",\n"
  "                        \"ip-addresses\": [ ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 23,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"2001:db8:3::3333\",\n"
  "                                \"name\": \"dns-servers\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            },\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 7,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"33\",\n"
  "                                \"name\": \"preference\",\n"
  "                                \"space\": \"dhcp6\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefixes\": [ \"2001:db8:3:2::/96\" ]\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:3::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 37
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"uint32\"\n"
  "            }\n"
  "        ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 234,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [\n"
  "                    {\n"
  "                        \"client-classes\": [ ],\n"
  "                        \"duid\": \"01:02:03:04:05:06:07:08:09:0a\",\n"
  "                        \"hostname\": \"\",\n"
  "                        \"ip-addresses\": [ \"2001:db8:2::1234\" ],\n"
  "                        \"option-data\": [\n"
  "                            {\n"
  "                                \"always-send\": false,\n"
  "                                \"code\": 100,\n"
  "                                \"csv-format\": true,\n"
  "                                \"data\": \"11\",\n"
  "                                \"name\": \"foo\",\n"
  "                                \"space\": \"isc\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"prefixes\": [ ]\n"
  "                    }\n"
  "                ],\n"
  "                \"subnet\": \"2001:db8:2::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 38
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"client-link-addr-option\", \"remote-id\", \"subscriber-id\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 39
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"client-link-addr-option\", \"remote-id\", \"subscriber-id\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 40
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/48\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 2,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:2::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"out-of-pool\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:2::/48\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 3,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:3::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"disabled\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:3::/48\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            },\n"
  "            {\n"
  "                \"id\": 4,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:4::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:4::/48\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 41
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"23\", \"37\", \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 42
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 43
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 44
  "{\n"
  "        \"decline-probation-period\": 12345,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 45
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 35,\n"
  "            \"hold-reclaimed-time\": 1800,\n"
  "            \"max-reclaim-leases\": 50,\n"
  "            \"max-reclaim-time\": 100,\n"
  "            \"reclaim-timer-wait-time\": 20,\n"
  "            \"unwarned-reclaim-cycles\": 10\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n",
      // CONFIGURATION 46
  "{\n"
  "        \"client-classes\": [\n"
  "            {\n"
  "                \"name\": \"one\",\n"
  "                \"option-data\": [ ]\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"two\",\n"
  "                \"option-data\": [ ]\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"three\",\n"
  "                \"option-data\": [ ]\n"
  "            }\n"
  "        ],\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8:1::1-2001:db8:1::ffff\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8:1::/64\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 47
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8::/64\"\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 48
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8::/64\",\n"
  "                        \"user-context\": { }\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 49
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8::/64\",\n"
  "                        \"user-context\": {\n"
  "                            \"lw4over6-bind-prefix-len\": 56,\n"
  "                            \"lw4over6-sharing-ratio\": 64,\n"
  "                            \"lw4over6-sysports-exclude\": true,\n"
  "                            \"lw4over6-v4-pool\": \"192.0.2.0/24\"\n"
  "                        }\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 50
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [ ],\n"
  "                \"pools\": [\n"
  "                    {\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pool\": \"2001:db8::/64\",\n"
  "                        \"user-context\": {\n"
  "                            \"lw4over6-bind-prefix-len\": 56,\n"
  "                            \"lw4over6-sharing-ratio\": 64,\n"
  "                            \"lw4over6-sysports-exclude\": true,\n"
  "                            \"lw4over6-v4-pool\": \"192.0.2.0/24\"\n"
  "                        }\n"
  "                    }\n"
  "                ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 51
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8::\",\n"
  "                        \"prefix-len\": 56\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 52
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8::\",\n"
  "                        \"prefix-len\": 56,\n"
  "                        \"user-context\": { }\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 53
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [\n"
  "            {\n"
  "                \"id\": 1,\n"
  "                \"option-data\": [ ],\n"
  "                \"pd-pools\": [\n"
  "                    {\n"
  "                        \"delegated-len\": 64,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"prefix\": \"2001:db8::\",\n"
  "                        \"prefix-len\": 56,\n"
  "                        \"user-context\": {\n"
  "                            \"lw4over6-bind-prefix-len\": 56,\n"
  "                            \"lw4over6-sharing-ratio\": 64,\n"
  "                            \"lw4over6-sysports-exclude\": true,\n"
  "                            \"lw4over6-v4-pool\": \"192.0.2.0/24\"\n"
  "                        }\n"
  "                    }\n"
  "                ],\n"
  "                \"pools\": [ ],\n"
  "                \"preferred-lifetime\": 3000,\n"
  "                \"rapid-commit\": false,\n"
  "                \"rebind-timer\": 2000,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"renew-timer\": 1000,\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"reservations\": [ ],\n"
  "                \"subnet\": \"2001:db8::/32\",\n"
  "                \"valid-lifetime\": 4000\n"
  "            }\n"
  "        ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 54
  "{\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"hosts-databases\": [\n"
  "            {\n"
  "                \"name\": \"keatest1\",\n"
  "                \"password\": \"keatest\",\n"
  "                \"type\": \"mysql\",\n"
  "                \"user\": \"keatest\"\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"keatest2\",\n"
  "                \"password\": \"keatest\",\n"
  "                \"type\": \"mysql\",\n"
  "                \"user\": \"keatest\"\n"
  "            }\n"
  "        ],\n"
  "        \"interfaces-config\": {\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [ ],\n"
  "        \"option-def\": [ ],\n"
  "        \"preferred-lifetime\": 3000,\n"
  "        \"rebind-timer\": 2000,\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"renew-timer\": 1000,\n"
  "        \"server-id\": {\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LLT\"\n"
  "        },\n"
  "        \"shared-networks\": [ ],\n"
  "        \"subnet6\": [ ],\n"
  "        \"valid-lifetime\": 4000\n"
  "    }\n",
      // CONFIGURATION 55
  "{\n"
  "        \"comment\": \"A DHCPv6 server\",\n"
  "        \"client-classes\": [\n"
  "            {\n"
  "                \"comment\": \"match all\",\n"
  "                \"name\": \"all\",\n"
  "                \"option-data\": [ ],\n"
  "                \"test\": \"'' == ''\"\n"
  "            },\n"
  "            {\n"
  "                \"name\": \"none\",\n"
  "                \"option-data\": [ ]\n"
  "            },\n"
  "            {\n"
  "                \"comment\": \"a comment\",\n"
  "                \"name\": \"both\",\n"
  "                \"option-data\": [ ],\n"
  "                \"user-context\": {\n"
  "                    \"version\": 1\n"
  "                }\n"
  "            }\n"
  "        ],\n"
  "        \"control-socket\": {\n"
  "            \"comment\": \"Indirect comment\",\n"
  "            \"socket-name\": \"/tmp/kea6-ctrl-socket\",\n"
  "            \"socket-type\": \"unix\"\n"
  "        },\n"
  "        \"decline-probation-period\": 86400,\n"
  "        \"dhcp-ddns\": {\n"
  "            \"comment\": \"No dynamic DNS\",\n"
  "            \"always-include-fqdn\": false,\n"
  "            \"enable-updates\": false,\n"
  "            \"generated-prefix\": \"myhost\",\n"
  "            \"max-queue-size\": 1024,\n"
  "            \"ncr-format\": \"JSON\",\n"
  "            \"ncr-protocol\": \"UDP\",\n"
  "            \"override-client-update\": false,\n"
  "            \"override-no-update\": false,\n"
  "            \"qualifying-suffix\": \"\",\n"
  "            \"replace-client-name\": \"never\",\n"
  "            \"sender-ip\": \"0.0.0.0\",\n"
  "            \"sender-port\": 0,\n"
  "            \"server-ip\": \"127.0.0.1\",\n"
  "            \"server-port\": 53001\n"
  "        },\n"
  "        \"dhcp4o6-port\": 0,\n"
  "        \"expired-leases-processing\": {\n"
  "            \"flush-reclaimed-timer-wait-time\": 25,\n"
  "            \"hold-reclaimed-time\": 3600,\n"
  "            \"max-reclaim-leases\": 100,\n"
  "            \"max-reclaim-time\": 250,\n"
  "            \"reclaim-timer-wait-time\": 10,\n"
  "            \"unwarned-reclaim-cycles\": 5\n"
  "        },\n"
  "        \"hooks-libraries\": [ ],\n"
  "        \"host-reservation-identifiers\": [ \"hw-address\", \"duid\" ],\n"
  "        \"interfaces-config\": {\n"
  "            \"comment\": \"Use wildcard\",\n"
  "            \"interfaces\": [ \"*\" ],\n"
  "            \"re-detect\": false\n"
  "        },\n"
  "        \"lease-database\": {\n"
  "            \"type\": \"memfile\"\n"
  "        },\n"
  "        \"mac-sources\": [ \"any\" ],\n"
  "        \"option-data\": [\n"
  "            {\n"
  "                \"comment\": \"Set option value\",\n"
  "                \"always-send\": false,\n"
  "                \"code\": 38,\n"
  "                \"csv-format\": false,\n"
  "                \"data\": \"ABCDEF0105\",\n"
  "                \"name\": \"subscriber-id\",\n"
  "                \"space\": \"dhcp6\"\n"
  "            }\n"
  "        ],\n"
  "        \"option-def\": [\n"
  "            {\n"
  "                \"comment\": \"An option definition\",\n"
  "                \"array\": false,\n"
  "                \"code\": 100,\n"
  "                \"encapsulate\": \"\",\n"
  "                \"name\": \"foo\",\n"
  "                \"record-types\": \"\",\n"
  "                \"space\": \"isc\",\n"
  "                \"type\": \"ipv6-address\"\n"
  "            }\n"
  "        ],\n"
  "        \"relay-supplied-options\": [ \"65\" ],\n"
  "        \"server-id\": {\n"
  "            \"comment\": \"DHCPv6 specific\",\n"
  "            \"enterprise-id\": 0,\n"
  "            \"htype\": 0,\n"
  "            \"identifier\": \"\",\n"
  "            \"persist\": true,\n"
  "            \"time\": 0,\n"
  "            \"type\": \"LL\"\n"
  "        },\n"
  "        \"shared-networks\": [\n"
  "            {\n"
  "                \"comment\": \"A shared network\",\n"
  "                \"name\": \"foo\",\n"
  "                \"option-data\": [ ],\n"
  "                \"preferred-lifetime\": 0,\n"
  "                \"rapid-commit\": false,\n"
  "                \"relay\": {\n"
  "                    \"ip-addresses\": [ ]\n"
  "                },\n"
  "                \"reservation-mode\": \"all\",\n"
  "                \"subnet6\": [\n"
  "                    {\n"
  "                        \"comment\": \"A subnet\",\n"
  "                        \"id\": 100,\n"
  "                        \"option-data\": [ ],\n"
  "                        \"pd-pools\": [\n"
  "                            {\n"
  "                                \"comment\": \"A prefix pool\",\n"
  "                                \"delegated-len\": 64,\n"
  "                                \"option-data\": [ ],\n"
  "                                \"prefix\": \"2001:db2::\",\n"
  "                                \"prefix-len\": 48\n"
  "                            }\n"
  "                        ],\n"
  "                        \"pools\": [\n"
  "                            {\n"
  "                                \"comment\": \"A pool\",\n"
  "                                \"option-data\": [ ],\n"
  "                                \"pool\": \"2001:db1::/64\"\n"
  "                            }\n"
  "                        ],\n"
  "                        \"preferred-lifetime\": 3600,\n"
  "                        \"rapid-commit\": false,\n"
  "                        \"rebind-timer\": 1800,\n"
  "                        \"relay\": {\n"
  "                            \"ip-addresses\": [ ]\n"
  "                        },\n"
  "                        \"renew-timer\": 900,\n"
  "                        \"reservation-mode\": \"all\",\n"
  "                        \"reservations\": [\n"
  "                            {\n"
  "                                \"comment\": \"A host reservation\",\n"
  "                                \"client-classes\": [ ],\n"
  "                                \"hostname\": \"foo.example.com\",\n"
  "                                \"hw-address\": \"aa:bb:cc:dd:ee:ff\",\n"
  "                                \"ip-addresses\": [ ],\n"
  "                                \"option-data\": [\n"
  "                                    {\n"
  "                                        \"comment\": \"An option in a reservation\",\n"
  "                                        \"always-send\": false,\n"
  "                                        \"code\": 24,\n"
  "                                        \"csv-format\": true,\n"
  "                                        \"data\": \"example.com\",\n"
  "                                        \"name\": \"domain-search\",\n"
  "                                        \"space\": \"dhcp6\"\n"
  "                                    }\n"
  "                                ],\n"
  "                                \"prefixes\": [ ]\n"
  "                            }\n"
  "                        ],\n"
  "                        \"subnet\": \"2001:db1::/48\",\n"
  "                        \"valid-lifetime\": 7200\n"
  "                    }\n"
  "                ]\n"
  "            }\n"
  "        ],\n"
  "        \"subnet6\": [ ]\n"
  "    }\n"
  };
  
  /// @brief the number of configurations
  const size_t max_config_counter = sizeof(EXTRACTED_CONFIGS) / sizeof(char*);
  ///@}
  
  /// @brief the extraction counter
  ///
  /// < 0 means do not extract, >= 0 means extract on extractConfig() calls
  /// and increment
  #ifdef EXTRACT_CONFIG
  int extract_count = 0;
  #else
  int extract_count = -1;
  #endif
  
  /// @brief the generate action
  /// false means do nothing, true means unparse extracted configurations
  #ifdef GENERATE_ACTION
  const bool generate_action = true;
  #else
  const bool generate_action = false;
  static_assert(max_config_counter == sizeof(UNPARSED_CONFIGS) / sizeof(char*),
                "unparsed configurations must be generated");
  #endif
  
  /// @brief format and output a configuration
  void
  outputFormatted(const std::string& config) {
      // pretty print it
      ConstElementPtr json = extractComments(parseDHCP6(config));
      std::string prettier = prettyPrint(json, 4, 4);
      // get it as a line array
      std::list<std::string> lines;
      boost::split(lines, prettier, boost::is_any_of("\n"));
      // add escapes using again JSON
      std::list<std::string> escapes;
      while (!lines.empty()) {
          const std::string& line = lines.front();
          ConstElementPtr escaping = Element::create(line + "\n");
          escapes.push_back(escaping->str());
          lines.pop_front();
      }
      // output them on std::cerr
      while (!escapes.empty()) {
          std::cerr << "\n" << escapes.front();
          escapes.pop_front();
      }
  }
  
  } // namespace
  
  namespace isc {
  namespace dhcp {
  namespace test {
  
  /// @ref isc::dhcp::test::extractConfig in the header
  void
  extractConfig(const std::string& config) {
      // skip when disable
      if (extract_count < 0) {
          return;
      }
      // mark beginning
      if (extract_count == 0) {
          // header (note there is no trailer)
          std::cerr << "/// put this after const char* EXTRACTED_CONFIGS[] = {\n";
      } else {
          // end of previous configuration
          std::cerr << ",\n";
      }
      std::cerr << "    // CONFIGURATION " << extract_count;
      try {
          outputFormatted(config);
      } catch (...) {
          // mark error
          std::cerr << "\n//// got an error\n";
      }
      ++extract_count;
  }
  
  }  // namespace test
  }  // namespace dhcp
  }  // namespace isc
  
  namespace {
  
  /// Test fixture class (code from Dhcp6ParserTest)
  class Dhcp6GetConfigTest : public ::testing::TestWithParam<size_t> {
  public:
      Dhcp6GetConfigTest() : rcode_(-1), srv_(0) {
          // srv_(0) means to not open any sockets. We don't want to
          // deal with sockets here, just check if configuration handling
          // is sane.
  
          // Reset configuration for each test.
          resetConfiguration();
      }
  
      ~Dhcp6GetConfigTest() {
          // Reset configuration database after each test.
          resetConfiguration();
      };
  
      /// @brief Parse and Execute configuration
      ///
      /// Parses a configuration and executes a configuration of the server.
      /// If the operation fails, the current test will register a failure.
      ///
      /// @param config Configuration to parse
      /// @param operation Operation being performed.  In the case of an error,
      ///        the error text will include the string "unable to <operation>.".
      ///
      /// @return true if the configuration succeeded, false if not.
      bool
      executeConfiguration(const std::string& config, const char* operation) {
          // clear config manager
          CfgMgr::instance().clear();
  
          // enable fake network interfaces
          IfaceMgrTestConfig test_config(true);
  
          // try JSON parser
          ConstElementPtr json;
          try {
              json = parseJSON(config);
          } catch (const std::exception& ex) {
              ADD_FAILURE() << "invalid JSON for " << operation
                            << " failed with " << ex.what()
                            << " on\n" << config << "\n";
              return (false);
          }
  
          // try DHCP6 parser
          try {
              json = parseDHCP6(config, true);
          } catch (...) {
              ADD_FAILURE() << "parsing failed for " << operation
                            << " on\n" << prettyPrint(json) << "\n";
              return (false);
          }
  
          // try DHCP6 configure
          ConstElementPtr status;
          try {
              status = configureDhcp6Server(srv_, json);
          } catch (const std::exception& ex) {
              ADD_FAILURE() << "configure for " << operation
                            << " failed with " << ex.what()
                            << " on\n" << prettyPrint(json) << "\n";
              return (false);
          }
  
          // The status object must not be NULL
          if (!status) {
              ADD_FAILURE() << "configure for " << operation
                            << " returned null on\n"
                            << prettyPrint(json) << "\n";
              return (false);
          }
  
          // Returned value should be 0 (configuration success)
          comment_ = parseAnswer(rcode_, status);
          if (rcode_ != 0) {
              string reason = "";
              if (comment_) {
                  reason = string(" (") + comment_->stringValue() + string(")");
              }
              ADD_FAILURE() << "configure for " << operation
                            << " returned error code "
                            << rcode_ << reason << " on\n"
                            << prettyPrint(json) << "\n";
              return (false);
          }
          return (true);
      }
  
      /// @brief Reset configuration database.
      ///
      /// This function resets configuration data base by
      /// removing all subnets and option-data. Reset must
      /// be performed after each test to make sure that
      /// contents of the database do not affect result of
      /// subsequent tests.
      void resetConfiguration() {
          string config = "{"
              "\"interfaces-config\": { \"interfaces\": [ \"*\" ] },"
              "\"preferred-lifetime\": 3000,"
              "\"rebind-timer\": 2000, "
              "\"renew-timer\": 1000, "
              "\"valid-lifetime\": 4000, "
              "\"subnet6\": [ ], "
              "\"dhcp-ddns\": { \"enable-updates\" : false }, "
              "\"option-def\": [ ], "
              "\"option-data\": [ ] }";
          EXPECT_TRUE(executeConfiguration(config, "reset configuration"));
          CfgMgr::instance().clear();
          CfgMgr::instance().setFamily(AF_INET6);
      }
  
      int rcode_; ///< Return code (see @ref isc::config::parseAnswer)
      ControlledDhcpv6Srv srv_; ///< Instance of the ControlledDhcp6Srv used during tests
      ConstElementPtr comment_; ///< Comment (see @ref isc::config::parseAnswer)
  };
  
  /// Test a configuration
  TEST_P(Dhcp6GetConfigTest, run) {
      // configurations have not been extracted yet
      if (max_config_counter == 0) {
          return;
      }
  
      // get the index of configurations to test
      size_t config_counter = GetParam();
  
      // emit unparsed header if wanted
      if ((config_counter == 0) && generate_action) {
          std::cerr << "///put this after const char* UNPARSED_CONFIGS[] = {\n";
      }
  
      // get the extracted configuration
      std::string config = EXTRACTED_CONFIGS[config_counter];
      std::ostringstream ss;
      ss << "extracted config #" << config_counter;
  
      // execute the extracted configuration
      ASSERT_TRUE(executeConfiguration(config, ss.str().c_str()));
  
      // unparse it
      ConstSrvConfigPtr extracted = CfgMgr::instance().getStagingCfg();
      ConstElementPtr unparsed;
      ASSERT_NO_THROW(unparsed = extracted->toElement());
      ConstElementPtr dhcp;
      ASSERT_NO_THROW(dhcp = unparsed->get("Dhcp6"));
      ASSERT_TRUE(dhcp);
  
      // dump if wanted else check
      std::string expected;
      if (generate_action) {
          if (config_counter > 0) {
              std::cerr << ",\n";
          }
          std::cerr << "    // CONFIGURATION " << config_counter;
          ASSERT_NO_THROW(expected = prettyPrint(dhcp));
          ASSERT_NO_THROW(outputFormatted(dhcp->str()));
      } else {
          expected = UNPARSED_CONFIGS[config_counter];
          // get the expected config using the dhcpv6 syntax parser
          ElementPtr jsond;
          ASSERT_NO_THROW(jsond = parseDHCP6(expected, true));
          // get the expected config using the generic JSON syntax parser
          ElementPtr jsonj;
          ASSERT_NO_THROW(jsonj = parseJSON(expected));
          // the generic JSON parser does not handle comments
          EXPECT_TRUE(isEquivalent(jsond, moveComments(jsonj)));
          // check that unparsed and expected values match
          EXPECT_TRUE(isEquivalent(dhcp, jsonj));
          // check on pretty prints too
          std::string current = prettyPrint(dhcp, 4, 4) + "\n";
          EXPECT_EQ(expected, current);
          if (expected != current) {
              expected = current;
          }
      }
  
      // execute the dhcp configuration
      ss.str("");
      ss << "unparsed config #" << config_counter;
      EXPECT_TRUE(executeConfiguration(expected, ss.str().c_str()));
  
      // is it a fixed point?
      ConstSrvConfigPtr extracted2 = CfgMgr::instance().getStagingCfg();
      ConstElementPtr unparsed2;
      ASSERT_NO_THROW(unparsed2 = extracted2->toElement());
      ASSERT_TRUE(unparsed2);
      EXPECT_TRUE(isEquivalent(unparsed, unparsed2));
  }
  
  class IntToString {
  public:
      std::string operator()(const testing::TestParamInfo<size_t>& n) {
          std::ostringstream ss;
          ss << static_cast<size_t>(n.param);
          return (ss.str());
      }
  };
  
  /// Define the parameterized test loop.
  INSTANTIATE_TEST_CASE_P(Dhcp6GetConfigTest, Dhcp6GetConfigTest,
                          ::testing::Range(static_cast<size_t>(0),
                                           max_config_counter),
                          IntToString());
  }  // namespace
  