anchor.diff:  api_b_sendto_and_recvfrom_udpL(_Config) when is_list(_Config) ->
       ?TT(?SECS(5)),
       tc_try(api_b_sendto_and_recvfrom_udpL,
  -           fun() -> has_support_unix_domain_socket() end,
  +           fun() ->
  +                   has_support_unix_domain_socket(),
  +                   unix_domain_socket_host_cond()
  +           end,
              fun() ->
                      Send = fun(Sock, Data, Dest) ->
                                     socket:sendto(Sock, Data, Dest)
  
positive.code: api_b_sendmsg_and_recvmsg_udpL(_Config) when is_list(_Config) ->
      ?TT(?SECS(5)),
      tc_try(api_b_sendmsg_and_recvmsg_udpL,
             fun() -> has_support_unix_domain_socket() end,
             fun() ->
                     Send = fun(Sock, Data, Dest) ->
                                    %% We need tests for this,
  
negative.code:     end.
  
  
  sock_connect(Sock, SockAddr) ->
      try socket:connect(Sock, SockAddr) of
          ok ->
  