From: Vlad Yasevich <vladislav.yasevich@hp.com>
Date: Wed, 18 Jul 2007 09:52:33 +0000 (-0700)
Subject: Fix ipv6 link down handling.
X-Git-Tag: v2.6.22.2~72
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7e2d130b1da457858791d8f8b00b17c821db039f;p=thirdparty%2Fkernel%2Fstable.git

Fix ipv6 link down handling.

[IPV6]: Call inet6addr_chain notifiers on link down

Currently if the link is brought down via ip link or ifconfig down,
the inet6addr_chain notifiers are not called even though all
the addresses are removed from the interface.  This caused SCTP
to add duplicate addresses to it's list.

Signed-off-by: Vlad Yasevich <vladislav.yasevich@hp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index f96ed76d8fa4b..2cc3728f6a2d2 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2472,6 +2472,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 		write_unlock_bh(&idev->lock);
 
 		__ipv6_ifa_notify(RTM_DELADDR, ifa);
+		atomic_notifier_call_chain(&inet6addr_chain, NETDEV_DOWN, ifa);
 		in6_ifa_put(ifa);
 
 		write_lock_bh(&idev->lock);