Index: ath/if_ath.c
===================================================================
--- ath/if_ath.c	(revision 3925)
+++ ath/if_ath.c	(working copy)
@@ -3002,6 +3002,7 @@
 ath_tx_startraw(struct net_device *dev, struct ath_buf *bf, struct sk_buff *skb)
 {
 	struct ath_softc *sc = netdev_priv(dev);
+	struct ieee80211com *ic = &sc->sc_ic;
 	struct ath_hal *ah = sc->sc_ah;
 	struct ieee80211_phy_params *ph = &(SKB_CB(skb)->phy); 
 	const HAL_RATE_TABLE *rt;
@@ -3014,7 +3015,8 @@
 	struct ieee80211_frame *wh;
 
 	wh = (struct ieee80211_frame *)skb->data;
-	try0 = ph->try[0];
+//	try0 = ph->try[0];
+	try0 = (ic->ic_opmode == IEEE80211_M_MONITOR) ? 1 : ph->try[0];
 	rt = sc->sc_currates;
 	txrate = dot11_to_ratecode(sc, rt, ph->rate[0]);
 	power = ph->power > 60 ? 60 : ph->power;
@@ -3038,7 +3040,8 @@
 	rt = sc->sc_currates;
 	KASSERT(rt != NULL, ("no rate table, mode %u", sc->sc_curmode));
 
-	if (IEEE80211_IS_MULTICAST(wh->i_addr1)) {
+	if (IEEE80211_IS_MULTICAST(wh->i_addr1) || ((ic->ic_opmode == 
+IEEE80211_M_MONITOR) && (skb->data[1]&3) != 0x01) ) {
 		flags |= HAL_TXDESC_NOACK;	/* no ack on broad/multicast */
 		sc->sc_stats.ast_tx_noack++;
 		try0 = 1;
