netdev - [PATCH 2/3] [IPV6]: inet6_dev on loopback should be kept until namespace stop.

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Message-Id: <1205850925-11736-2-git-send-email-den@openvz.org>
Date:	Tue, 18 Mar 2008 17:35:24 +0300
From:	"Denis V. Lunev" <den@...nvz.org>
To:	davem@...emloft.net
Cc:	yoshfuji@...ux-ipv6.org, netdev@...r.kernel.org, kaber@...sh.net,
	containers@...ts.osdl.org, dlezcano@...ibm.com,
	benjamin.thery@...l.net, "Denis V. Lunev" <den@...nvz.org>
Subject: [PATCH 2/3] [IPV6]: inet6_dev on loopback should be kept until namespace stop.

In the other case it will be destroyed when last address will be removed
from lo inside a namespace. This will break IPv6 in several places. The
most obvious one is ip6_dst_ifdown.

Signed-off-by: Denis V. Lunev <den@...nvz.org>
---
 net/ipv6/addrconf.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index d68e8f5..40784ea 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2444,7 +2444,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
 
 	ASSERT_RTNL();
 
-	if (dev == init_net.loopback_dev && how == 1)
+	if ((dev->flags & IFF_LOOPBACK) && how == 1)
 		how = 0;
 
 	rt6_ifdown(net, dev);
-- 
1.5.3.rc5
--
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