fd_ip
if (fdp->fd_ip.s_addr)
printf(":%s", inet_ntoa(fdp->fd_ip));
fr->fr_dif.fd_ip = $4.in4;
fr->fr_tif.fd_ip = $4.in4;
fr->fr_rif.fd_ip = $4.in4;
sin->sin_addr = fdp->fd_ip;