+ ret = create_udp_send_socket(TARGET_ADDR(ut), ut->port,
+ conf.udp_ttl_arg);
+ if (ret < 0)
+ return ret;
+ ut->fd = ret;
+ ret = mark_fd_nonblocking(ut->fd);
+ if (ret < 0) {
+ close(ut->fd);
+ return ret;
+ }
+ add_close_on_fork_list(ut->fd);
+ return 1;