anchor.diff:  
   send(Socket, Addr, Port, AncData, Data)
     when is_tuple(Addr) andalso
  -       ((size(Addr) =:= 4) orelse (size(Addr) =:= 8)) andalso
  +       ((tuple_size(Addr) =:= 4) orelse (tuple_size(Addr) =:= 8)) andalso
          is_integer(Port) ->
       send(Socket, {Addr, Port}, AncData, Data);
   send(?MODULE_socket(_, ESock) = Socket,
  
positive.code:     
  -compile({inline, [dest2sockaddr/1]}).
  dest2sockaddr({Addr, Port})
    when is_tuple(Addr) andalso (size(Addr) =:= 4) andalso is_integer(Port) ->
      #{family => inet,
        port   => Port,
        addr   => Addr};
  dest2sockaddr({Addr, Port})
    when is_tuple(Addr) andalso (size(Addr) =:= 8) andalso is_integer(Port) ->
      #{family => inet6,
        port   => Port,
        addr   => Addr};
  
negative.code: 	       make_cmsghdrs(AncData));
  send(Socket, Addr, Port, Data)
    when is_tuple(Addr) andalso
         ((tuple_size(Addr) =:= 4) orelse (tuple_size(Addr) =:= 8)) andalso
         is_integer(Port) ->
      send(Socket, {Addr, Port}, Data);
  send(?MODULE_socket(_, ESock) = Socket,
  