M_AGE_GET
_age -= M_AGE_GET((_ni)->ni_savedq.ifq_tail); \
M_AGE_GET(m) < IEEE80211_INACT_WAIT) {
IEEE80211_DPRINTF(ic, IEEE80211_MSG_POWER, "[%s] discard frame, age %u\n", ether_sprintf(ni->ni_macaddr), M_AGE_GET(m));/*XXX*/