TUN_LAYER2
return (tun_create(ifc, unit, TUN_LAYER2));
if ((flags & TUN_LAYER2) == 0) {
sc->sc_flags |= TUN_LAYER2;
if (ISSET(sc->sc_flags, TUN_LAYER2))
if (sc->sc_flags & TUN_LAYER2)
if (!(sc->sc_flags & TUN_LAYER2)) {
if (!(sc->sc_flags & TUN_LAYER2)) {
if (!ISSET(sc->sc_flags, TUN_LAYER2)) {