diff --git a/sys/net80211/ieee80211_ioctl.c b/sys/net80211/ieee80211_ioctl.c
index 8a15ca84550a..94198719ca75 100644
--- a/sys/net80211/ieee80211_ioctl.c
+++ b/sys/net80211/ieee80211_ioctl.c
@@ -1480,6 +1480,9 @@ ieee80211_ioctl_get80211(struct ieee80211com *ic, u_long cmd, struct ieee80211re
 	case IEEE80211_IOC_PUREG:
 		ireq->i_val = (ic->ic_flags & IEEE80211_F_PUREG) != 0;
 		break;
+	case IEEE80211_IOC_MCAST_RATE:
+		ireq->i_val = ic->ic_mcast_rate;
+		break;
 	case IEEE80211_IOC_FRAGTHRESHOLD:
 		ireq->i_val = ic->ic_fragthreshold;
 		break;
@@ -2369,6 +2372,9 @@ ieee80211_ioctl_set80211(struct ieee80211com *ic, u_long cmd, struct ieee80211re
 		if (ic->ic_curmode == IEEE80211_MODE_11G)
 			error = ENETRESET;
 		break;
+	case IEEE80211_IOC_MCAST_RATE:
+		ic->ic_mcast_rate = ireq->i_val & IEEE80211_RATE_VAL;
+		break;
 	case IEEE80211_IOC_FRAGTHRESHOLD:
 		if ((ic->ic_caps & IEEE80211_C_TXFRAG) == 0 &&
 		    ireq->i_val != IEEE80211_FRAG_MAX)
diff --git a/sys/net80211/ieee80211_ioctl.h b/sys/net80211/ieee80211_ioctl.h
index 8c3b2abbb2f4..86da41ecf314 100644
--- a/sys/net80211/ieee80211_ioctl.h
+++ b/sys/net80211/ieee80211_ioctl.h
@@ -442,6 +442,7 @@ struct ieee80211req {
 #define	IEEE80211_IOC_ADDMAC		54	/* add sta to MAC ACL table */
 #define	IEEE80211_IOC_DELMAC		55	/* del sta from MAC ACL table */
 #define	IEEE80211_IOC_PUREG		56	/* pure 11g (no 11b stations) */
+#define	IEEE80211_IOC_MCAST_RATE	72	/* tx rate for mcast frames */
 #define	IEEE80211_IOC_FRAGTHRESHOLD	73	/* tx fragmentation threshold */
 
 /*
diff --git a/sys/net80211/ieee80211_proto.c b/sys/net80211/ieee80211_proto.c
index 5537b336fa49..8f3abd8efd49 100644
--- a/sys/net80211/ieee80211_proto.c
+++ b/sys/net80211/ieee80211_proto.c
@@ -97,6 +97,7 @@ ieee80211_proto_attach(struct ieee80211com *ic)
 	ic->ic_rtsthreshold = IEEE80211_RTS_DEFAULT;
 	ic->ic_fragthreshold = IEEE80211_FRAG_DEFAULT;
 	ic->ic_fixed_rate = IEEE80211_FIXED_RATE_NONE;
+	ic->ic_mcast_rate = IEEE80211_MCAST_RATE_DEFAULT;
 	ic->ic_protmode = IEEE80211_PROT_CTSONLY;
 	ic->ic_roaming = IEEE80211_ROAMING_AUTO;
 
diff --git a/sys/net80211/ieee80211_var.h b/sys/net80211/ieee80211_var.h
index 05a8849bffac..b4be276ffc69 100644
--- a/sys/net80211/ieee80211_var.h
+++ b/sys/net80211/ieee80211_var.h
@@ -74,6 +74,7 @@
 #define	IEEE80211_PS_MAX_QUEUE	50	/* maximum saved packets */
 
 #define	IEEE80211_FIXED_RATE_NONE	-1
+#define	IEEE80211_MCAST_RATE_DEFAULT	(2*1)	/* default mcast rate (1M) */
 
 #define	IEEE80211_RTS_DEFAULT		IEEE80211_RTS_MAX
 #define	IEEE80211_FRAG_DEFAULT		IEEE80211_FRAG_MAX
@@ -138,6 +139,7 @@ struct ieee80211com {
 	struct ieee80211_channel *ic_ibss_chan;
 	struct ieee80211_channel *ic_curchan;	/* current channel */
 	int			ic_fixed_rate;	/* index to ic_sup_rates[] */
+	int			ic_mcast_rate;	/* rate for mcast frames */
 	u_int16_t		ic_rtsthreshold;
 	u_int16_t		ic_fragthreshold;
 	struct ieee80211_node	*(*ic_node_alloc)(struct ieee80211_node_table*);