VNF_KLABEL
vnd->sc_flags |= VNF_KLABEL;
vnd->sc_flags &= ~VNF_KLABEL;
~(VNF_INITED | VNF_READONLY | VNF_KLABEL | VNF_VLABEL
sc->sc_flags = VNF_KLABEL;
if ((sc->sc_flags & VNF_KLABEL) == 0)