anchor.diff:                      Nodes = load_balancing:choose_nodes_for_dns(LBAdvice),
                       {ok, TTL} = application:get_env(?APP_NAME, dns_a_response_ttl),
                       {ok,
  -                        % TODO!!!!! ?S_A
  -                            [dns_server:answer_record(Domain, TTL, a, IP) || IP <- Nodes] ++
  +                            [dns_server:answer_record(Domain, TTL, ?S_A, IP) || IP <- Nodes] ++
                               [dns_server:authoritative_answer_flag(true)]
                       };
                   Other ->
  
positive.code: %%--------------------------------------------------------------------
  -spec check_dns_connectivity() -> ok | {error, server_not_responding}.
  check_dns_connectivity() ->
  %%     {ok, HealthcheckTimeout} = application:get_env(?APP_NAME, nagios_healthcheck_timeout),
  %%     {ok, DNSPort} = application:get_env(?APP_NAME, dns_port),
  %%     Query = inet_dns:encode(
  %%         #dns_rec{
  %%             header = #dns_header{
  %%                 id = crypto:rand_uniform(1, 16#FFFF),
  %%                 opcode = 'query',
  %%                 rd = true
  %%             },
  %%             qdlist = [#dns_query{
  %%                 domain = "localhost",
  %%                 type = soa,
  %%                 class = in
  %%             }],
  %%             arlist = [{dns_rr_opt, ".", opt, 1280, 0, 0, 0, <<>>}]
  %%         }),
  %%     {ok, Socket} = gen_udp:open(0, [binary, {active, false}]),
  %%     gen_udp:send(Socket, "127.0.0.1", DNSPort, Query),
  %%     case gen_udp:recv(Socket, 65535, HealthcheckTimeout) of
  %%         {ok, _} ->
  %%             % DNS is working
  %%             ok;
  %%         _ ->
  %%             % DNS is not working
  %%             {error, server_not_responding}
  %%     end.
      ok.
negative.code: 
  -include("global_definitions.hrl").
  -include_lib("ctool/include/logging.hrl").
  -include_lib("kernel/src/inet_dns.hrl").
  
  %% worker_plugin_behaviour callbacks
  -export([init/1, handle/1, cleanup/0]).
  