anchor.diff:  	 t_local_abstract/1, t_accept_inet6_tclass/1,
   	 s_accept_with_explicit_socket_backend/1,
   
  +         t_simple_local_sockaddr_in_send_recv/1,
  +         t_simple_link_local_sockaddr_in_send_recv/1,
            t_simple_local_sockaddr_in6_send_recv/1,
            t_simple_link_local_sockaddr_in6_send_recv/1
   	]).
  
positive.code:      t_fdconnect,
       t_implicit_inet6,
       t_accept_inet6_tclass,
       t_simple_local_sockaddr_in6_send_recv,
       t_simple_link_local_sockaddr_in6_send_recv
      ].
  
negative.code:             fun() ->
                      Domain = inet6,
                      {ok, LocalAddr} = ?LIB:which_local_addr(Domain),
                      SockAddr = #{family   => Domain,
                                   addr     => LocalAddr,
                                   port     => 0},
                      do_simple_sockaddr_send_recv(SockAddr, Config)
              end).
  
  
  