prog_write
rlen = prog_write(sock, (char *)&m_rtmsg, l);
rlen = prog_write(sock, next, rtm->rtm_msglen);
if (prog_write(s, &m_rtmsg, (size_t)l) < 0) {
if (prog_write(my_s, &m_rtmsg, (size_t)l) == -1) {
prog_write(2,"Remcap entry too long\n", 23);
prog_write(2, "Bad remcap entry\n", 18);
prog_write(2, "Infinite tc= loop\n", 18);
prog_write(2, "Remcap entry too long\n", 23);