Messages in this thread Patch in this message | | | Date | Fri, 16 Mar 2012 16:38:36 -0700 | From | Greg KH <> | Subject | [ 26/41] IPv6: Fix not join all-router mcast group when forwarding set. |
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3.2-stable review patch. If anyone has any objections, please let me know.
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From: Li Wei <lw@cn.fujitsu.com>
[ 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 <lw@cn.fujitsu.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- net/ipv6/addrconf.c | 4 ++++ 1 file changed, 4 insertions(+)
--- a/net/ipv6/addrconf.c +++ b/net/ipv6/addrconf.c @@ -434,6 +434,10 @@ 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; }
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