Index: ieee80211_input.c
===================================================================
RCS file: /cvs/src/sys/net80211/ieee80211_input.c,v
retrieving revision 1.169
diff -u -p -r1.169 ieee80211_input.c
--- ieee80211_input.c	22 Mar 2016 11:37:35 -0000	1.169
+++ ieee80211_input.c	8 Apr 2016 04:03:13 -0000
@@ -901,7 +901,7 @@ ieee80211_deliver_data(struct ieee80211c
 		struct ieee80211_node *ni1;
 
 		if (ETHER_IS_MULTICAST(eh->ether_dhost)) {
-			m1 = m_copym2(m, 0, M_COPYALL, M_DONTWAIT);
+			m1 = m_dup_pkt(m, ETHER_ALIGN, M_DONTWAIT);
 			if (m1 == NULL)
 				ifp->if_oerrors++;
 			else