From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1946174Ab2CPXix (ORCPT ); Fri, 16 Mar 2012 19:38:53 -0400 Received: from mail-pb0-f46.google.com ([209.85.160.46]:51243 "EHLO mail-pb0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1946161Ab2CPXir (ORCPT ); Fri, 16 Mar 2012 19:38:47 -0400 Message-Id: <20120316233449.397576407@linuxfoundation.org> User-Agent: quilt/0.60-19.1 Date: Fri, 16 Mar 2012 16:35:11 -0700 From: Greg KH To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: torvalds@linux-foundation.org, akpm@linux-foundation.org, alan@lxorguk.ukuu.org.uk, Li Wei , "David S. Miller" Subject: [ 24/38] IPv6: Fix not join all-router mcast group when forwarding set. In-Reply-To: <20120316233422.GA5461@kroah.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.0-stable review patch. If anyone has any objections, please let me know. ------------------ From: Li Wei [ Upstream commit d6ddef9e641d1229d4ec841dc75ae703171c3e92 ] When forwarding was set and a new net device is register, we need add this device to the all-router mcast group. Signed-off-by: Li Wei Signed-off-by: David S. Miller Signed-off-by: Greg Kroah-Hartman --- net/ipv6/addrconf.c | 4 ++++ 1 file changed, 4 insertions(+) --- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -433,6 +433,10 @@ static struct inet6_dev * ipv6_add_dev(s /* Join all-node multicast group */ ipv6_dev_mc_inc(dev, &in6addr_linklocal_allnodes); + /* Join all-router multicast group if forwarding is set */ + if (ndev->cnf.forwarding && dev && (dev->flags & IFF_MULTICAST)) + ipv6_dev_mc_inc(dev, &in6addr_linklocal_allrouters); + return ndev; }