rt2661_set_bssid
static void rt2661_set_bssid(struct rt2661_softc *,
rt2661_set_bssid(sc, ieee80211broadcastaddr);
rt2661_set_bssid(sc, vap->iv_bss->ni_bssid);
rt2661_set_bssid(sc, ni->ni_bssid);