MTF_ATEOT
sc->sc_flags &= ~(MTF_PASTEOT | MTF_ATEOT);
if ((sc->sc_flags & MTF_ATEOT) != 0)
sc->sc_flags |= MTF_ATEOT;
sc->sc_flags &= ~(MTF_PASTEOT | MTF_ATEOT);
if (sc->sc_flags & MTF_ATEOT)
sc->sc_flags |= MTF_ATEOT;