SIOP_ALIVE
if (sc->sc_flags & SIOP_ALIVE)
if ((sc->sc_flags & SIOP_ALIVE) == 0) {
sc->sc_flags |= SIOP_ALIVE;
if (sc->sc_flags & SIOP_ALIVE)
sc->sc_flags &= ~(SIOP_ALIVE|SIOP_INTDEFER|SIOP_INTSOFF);
if ((sc->sc_flags & SIOP_ALIVE) == 0) {
sc->sc_flags |= SIOP_ALIVE;