[IGMP]: workaround for IGMP v1/v2 bug

[~andy/linux] / net / ipv6 / mcast.c

diff --git a/net/ipv6/mcast.c b/net/ipv6/mcast.c
index f15e04ad026effec3f907f6eb2db1eb140e54c3b..fd939da090c451f848102667eecfcb60995f8a7d 100644 (file)
--- a/net/ipv6/mcast.c
+++ b/net/ipv6/mcast.c
@@ -1231,6 +1231,11 @@ int igmp6_event_report(struct sk_buff *skb)
        if (skb->pkt_type == PACKET_LOOPBACK)
                return 0;
 
+       /* send our report if the MC router may not have heard this report */
+       if (skb->pkt_type != PACKET_MULTICAST &&
+           skb->pkt_type != PACKET_BROADCAST)
+               return 0;
+
        if (!pskb_may_pull(skb, sizeof(struct in6_addr)))
                return -EINVAL;