text: # Copyright (C) 2014 Nippon Telegraph and Telephone Corporation.
  #
  # Licensed under the Apache License, Version 2.0 (the "License");
  # you may not use this file except in compliance with the License.
  # You may obtain a copy of the License at
  #
  #    http://www.apache.org/licenses/LICENSE-2.0
  #
  # Unless required by applicable law or agreed to in writing, software
  # distributed under the License is distributed on an "AS IS" BASIS,
  # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
  # implied.
  # See the License for the specific language governing permissions and
  # limitations under the License.
  
  """
   Defines data types and models required specifically for VRF (for IPv6)
   support. Represents data structures for VRF not VPN/global.
   (Inside VRF you have IPv4 prefixes and inside VPN you have VPNv6 prefixes)
  """
  
  import logging
  
  from os_ken.lib.packet.bgp import RF_IPv6_UC
  from os_ken.lib.packet.bgp import RF_IPv6_VPN
  from os_ken.lib.packet.bgp import IP6AddrPrefix
  from os_ken.lib.packet.bgp import LabelledVPNIP6AddrPrefix
  
  from os_ken.services.protocols.bgp.info_base.vpnv6 import Vpnv6Path
  from os_ken.services.protocols.bgp.info_base.vrf import VrfDest
  from os_ken.services.protocols.bgp.info_base.vrf import VrfNlriImportMap
  from os_ken.services.protocols.bgp.info_base.vrf import VrfPath
  from os_ken.services.protocols.bgp.info_base.vrf import VrfTable
  
  LOG = logging.getLogger('bgpspeaker.info_base.vrf6')
  
  
  class Vrf6Path(VrfPath):
      """Represents a way of reaching an IP destination with a VPN."""
      ROUTE_FAMILY = RF_IPv6_UC
      VPN_PATH_CLASS = Vpnv6Path
      VPN_NLRI_CLASS = LabelledVPNIP6AddrPrefix
  
  
  class Vrf6Dest(VrfDest):
      """Destination for IPv6 VRFs."""
      ROUTE_FAMILY = RF_IPv6_UC
  
  
  class Vrf6Table(VrfTable):
      """Virtual Routing and Forwarding information base for IPv6."""
      ROUTE_FAMILY = RF_IPv6_UC
      VPN_ROUTE_FAMILY = RF_IPv6_VPN
      NLRI_CLASS = IP6AddrPrefix
      VRF_PATH_CLASS = Vrf6Path
      VRF_DEST_CLASS = Vrf6Dest
  
  
  class Vrf6NlriImportMap(VrfNlriImportMap):
      VRF_PATH_CLASS = Vrf6Path
      NLRI_CLASS = IP6AddrPrefix
  