SIOCSIFLLADDR
.af_aifaddr = SIOCSIFLLADDR,
.af_aifaddr = SIOCSIFLLADDR,
.af_aifaddr = SIOCSIFLLADDR,
case SIOCSIFLLADDR:
rc = ioctl(s, SIOCSIFLLADDR, &ifr);
if (ioctl(s, SIOCSIFLLADDR, &ifr) == -1) {