HN_LINK_FLAG_LINKUP
if ((sc->hn_link_flags & HN_LINK_FLAG_LINKUP) == 0) {
~(HN_LINK_FLAG_LINKUP | HN_LINK_FLAG_NETCHG);
sc->hn_link_flags |= HN_LINK_FLAG_LINKUP;
sc->hn_link_flags &= ~HN_LINK_FLAG_LINKUP;
(sc->hn_link_flags & HN_LINK_FLAG_LINKUP) ?
sc->hn_link_flags &= ~HN_LINK_FLAG_LINKUP;