HN_LINK_FLAG_NETCHG
~(HN_LINK_FLAG_LINKUP | HN_LINK_FLAG_NETCHG);
if (sc->hn_link_flags & HN_LINK_FLAG_NETCHG)
sc->hn_link_flags |= HN_LINK_FLAG_NETCHG;
sc->hn_link_flags &= ~HN_LINK_FLAG_NETCHG;
if (sc->hn_link_flags & HN_LINK_FLAG_NETCHG)