anchor.diff:       {local,                  [], local_cases()},
        {socket_monitor,         [], socket_monitor_cases()},
   
  -     {sockaddr,               [], sockaddr_cases()}
  +     {sockaddr,               [], sockaddr_cases()},
  +     {otp18323,               [], otp18323_cases()}
       ].
   
   inet_backend_default_cases() ->
  
positive.code:      t_simple_link_local_sockaddr_in_send_recv,
       t_simple_local_sockaddr_in6_send_recv,
       t_simple_link_local_sockaddr_in6_send_recv
      ].
  
  
  
negative.code: 
  %% Verify that the options [add|drop]_membership do not mess up
  %% the options (including 'ip' which could not be added *after*).
  %% This just attempts to very that the option processing is ok.
  otp_18323_opts_processing(Config) when is_list(Config) ->
      ct:timetrap(?MINS(1)),
      ?TC_TRY(?FUNCTION_NAME, fun() -> do_otp_18323_opts_processing(Config) end).
  
  do_otp_18323_opts_processing(_Config) ->
      ?P("begin"),
  
      do_otp_18323_opts_processing_verify(
        {add_membership,  {{239,1,2,3},{0,0,0,0}}}),
  
      do_otp_18323_opts_processing_verify(
        {drop_membership, {{239,1,2,3},{0,0,0,0}}}),
  
      ?P("done"),
      ok.
  
  do_otp_18323_opts_processing_verify(MembershipOpt) ->
      Port   = 4321,
      RecBuf = 123456,
      Active = 10,
  