anchor.diff:                 "UNEXPECTED ADDRESS: "
                  "~n   UNEXPECTED Address: ~p, ~p"
                  "~n   Expected Address:   ~p, ~p"
  +               "~n   PeerName:           ~p"
                  "~n   => RETRY"
  -               "~n", [Addr2, PortNo2, Addr, PortNo]),
  +               "~n", [Addr2, PortNo2, Addr, PortNo, case inet:peername(Sock) of
  +                                                        {ok, PeerAP} ->
  +                                                            PeerAP;
  +                                                        {error, _} = PeerE ->
  +                                                            PeerE
  +                                                    end]),
               implicit_inet6_await_ac_comm_up(Sock, Addr, PortNo, OsName);
   
   	{Addr2, PortNo2, #sctp_assoc_change{state = comm_up}} = UNEX ->
  
positive.code: implicit_inet6(Config) when is_list(Config) ->
      ?P("begin"),
      Hostname = log_ok(inet:gethostname()),
      ?P("try create (listen) socket"),
      case gen_sctp:open(0, [inet6]) of
  	{ok, S1} ->
  	    case inet:getaddr(Hostname, inet6) of
  
negative.code: implicit_inet6_await_ac_comm_up(Sock, Addr, PortNo, OsName) ->
      case recv_event(log_ok(gen_sctp:recv(Sock))) of
  	{Addr, PortNo, #sctp_assoc_change{state = comm_up}} ->
              ?P("received assoc-change:comm-up event => done: "
                 "~n   ~p", [case inet:peername(Sock) of
                                 {ok, PeerAP} ->
                                     PeerAP;
                                 {error, _} = PeerE ->
                                     PeerE
                             end]),
  	    ok;
  	{Addr, PortNo, #sctp_paddr_change{state = addr_confirmed,
                                            addr  = {Addr, PortNo},
                                            error = 0}} ->
              ?P("received paddr-change:addr-confirmed event - "
                 "try recv assoc-change:comm-up: "
                 "~n   ~p", [case inet:peername(Sock) of
                                 {ok, PeerAP} ->
                                     PeerAP;
                                 {error, _} = PeerE ->
                                     PeerE
                             end]),
              implicit_inet6_await_ac_comm_up(Sock, Addr, PortNo, OsName);
  
  	{Addr2, PortNo2, #sctp_assoc_change{state = comm_up}}
  