1 files changed, 3 insertions, 2 deletions

diff --git a/net/ipv6/ipv6_sockglue.c b/net/ipv6/ipv6_sockglue.c
index 279ab86be662..f3ef4c38d315 100644
--- a/net/ipv6/ipv6_sockglue.c
+++ b/net/ipv6/ipv6_sockglue.c
@@ -423,11 +423,12 @@ done:
                         psin6 = (struct sockaddr_in6 *)&greqs.gsr_group;
                         retv = ipv6_sock_mc_join(sk, greqs.gsr_interface,
                                 &psin6->sin6_addr);
-                        if (retv)
+                        /* prior join w/ different source is ok */
+                        if (retv && retv != -EADDRINUSE)
                                 break;
                         omode = MCAST_INCLUDE;
                         add = 1;
-                } else /*IP_DROP_SOURCE_MEMBERSHIP */ {
+                } else /* MCAST_LEAVE_SOURCE_GROUP */ {
                         omode = MCAST_INCLUDE;
                         add = 0;
                 }