--- linux-2.4.2/net/ipv4/raw.c	Fri Feb  9 14:29:44 2001
+++ linux/net/ipv4/raw.c	Wed Feb 28 17:43:59 2001
@@ -54,6 +54,7 @@
 #include <linux/inet.h>
 #include <linux/netdevice.h>
 #include <linux/mroute.h>
+#include <linux/igmp.h>
 #include <net/ip.h>
 #include <net/protocol.h>
 #include <linux/skbuff.h>
@@ -107,6 +108,18 @@
 		   !(s->rcv_saddr && s->rcv_saddr != laddr)	&&
 		   !(s->bound_dev_if && s->bound_dev_if != dif))
 			break; /* gotcha */
+		if (LOCAL_MCAST(laddr)) {
+
+		    struct ip_mc_socklist *iml;
+		    struct ip_mreqn *imr;
+
+		    for (iml=sk->protinfo.af_inet.mc_list; iml; iml=iml->next) {
+		      imr = &(iml->multi);
+		      if ((imr->imr_multiaddr.s_addr == laddr) && !(imr->imr_ifindex && imr->imr_ifindex != dif))
+			        return s;
+		    }
+
+		}
 	}
 	return s;
 }