SIOCGIFNETMASK 128 lib/replace/getifaddrs.c if (ioctl(fd, SIOCGIFNETMASK, &ifr[i]) != -1) { SIOCGIFNETMASK 231 lib/replace/getifaddrs.c strioctl.ic_cmd = SIOCGIFNETMASK; SIOCGIFNETMASK 315 lib/replace/getifaddrs.c if (ioctl(fd, SIOCGIFNETMASK, ifr) != 0) {