SIOCGIFADDR
if (ioctl(nit, SIOCGIFADDR, &ifrnit) < 0) {
case SIOCGIFADDR: {
case SIOCGIFADDR:
if (ioctl(fd, SIOCGIFADDR, enaddr) < 0) {
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR:
case SIOCGIFADDR: