Index: head/sys/netinet/udp_usrreq.c
===================================================================
--- head/sys/netinet/udp_usrreq.c
+++ head/sys/netinet/udp_usrreq.c
@@ -528,7 +528,6 @@
 	    in_broadcast(ip->ip_dst, ifp)) {
 		struct inpcb *last;
 		struct inpcbhead *pcblist;
-		struct ip_moptions *imo;
 
 		INP_INFO_RLOCK_ET(pcbinfo, et);
 		pcblist = udp_get_pcblist(proto);
@@ -563,10 +562,12 @@
 			 * Handle socket delivery policy for any-source
 			 * and source-specific multicast. [RFC3678]
 			 */
-			imo = inp->inp_moptions;
 			if (IN_MULTICAST(ntohl(ip->ip_dst.s_addr))) {
+				struct ip_moptions	*imo;
 				struct sockaddr_in	 group;
 				int			 blocked;
+
+				imo = inp->inp_moptions;
 				if (imo == NULL) {
 					INP_RUNLOCK(inp);
 					continue;