HVN_SCF_ATTACHED
if ((sc->sc_flags & HVN_SCF_ATTACHED) && old_caps != sc->sc_caps) {
if (sc->sc_flags & HVN_SCF_ATTACHED) {
SET(sc->sc_flags, HVN_SCF_ATTACHED);
if (!ISSET(sc->sc_flags, HVN_SCF_ATTACHED))