1170     static int ip_fd = 0;  in tap_alloc()  local
1189     if( ip_fd )  in tap_alloc()
1190        close(ip_fd);  in tap_alloc()
1192     TFR(ip_fd = open("/dev/udp", O_RDWR, 0));  in tap_alloc()
1193     if (ip_fd < 0) {  in tap_alloc()
1240     if (ioctl (ip_fd, I_POP, NULL) < 0)  in tap_alloc()
1242     if (ioctl (ip_fd, I_PUSH, "arp") < 0)  in tap_alloc()
1258     if((ip_muxid = ioctl(ip_fd, I_LINK, if_fd)) < 0){  in tap_alloc()
1263     if ((arp_muxid = ioctl (ip_fd, link_type, arp_fd)) < 0)  in tap_alloc()
1273     if (ioctl (ip_fd, SIOCSLIFMUXID, &ifr) < 0)  in tap_alloc()
1275       ioctl (ip_fd, I_PUNLINK , arp_muxid);  in tap_alloc()
1276       ioctl (ip_fd, I_PUNLINK, ip_muxid);  in tap_alloc()