VIFF_TUNNEL
return !(vif->vif_flags & (VIFF_TUNNEL | VIFF_REGISTER));
if (vif->flags & VIFF_TUNNEL) {
if (vif->flags & VIFF_TUNNEL) {
if (v->flags & (VIFF_TUNNEL | VIFF_REGISTER) && !notify)
case VIFF_TUNNEL:
(VIFF_TUNNEL | VIFF_REGISTER));