_so_connect
if (_so_connect(tmp_fd, sock, sock_len, SOV_SOCKBSD) < 0) {
extern int _so_connect(int, struct sockaddr *, socklen_t, int);
return (_so_connect(sock, addr, addrlen, SOV_DEFAULT));
return (_so_connect(sock, addr, addrlen, SOV_XPG4_2));
extern int _so_connect();