SIOCDIFPARENT
if (ioctl(sock, SIOCDIFPARENT, &ifr) == -1)
case SIOCDIFPARENT:
case SIOCDIFPARENT:
case SIOCDIFPARENT:
case SIOCDIFPARENT:
case SIOCDIFPARENT:
case SIOCDIFPARENT:
return (vlan_ioctl(ifp, SIOCDIFPARENT, (caddr_t)ifr));
case SIOCDIFPARENT: