From: Gao feng <gaofeng@cn.fujitsu.com>
Date: Sun, 16 Jun 2013 03:14:30 +0000 (+0800)
Subject: ipv6: don't call addrconf_dst_alloc again when enable lo
X-Git-Tag: v3.10~13^2~23
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=a881ae1f625c599b460cc8f8a7fcb1c438f699ad;p=pandora-kernel.git

ipv6: don't call addrconf_dst_alloc again when enable lo

If we disable all of the net interfaces, and enable
un-lo interface before lo interface, we already allocated
the addrconf dst in ipv6_add_addr. So we shouldn't allocate
it again when we enable lo interface.

Otherwise the message below will be triggered.
unregister_netdevice: waiting for sit1 to become free. Usage count = 1

This problem is introduced by commit 25fb6ca4ed9cad72f14f61629b68dc03c0d9713f
"net IPv6 : Fix broken IPv6 routing table after loopback down-up"

Signed-off-by: Gao feng <gaofeng@cn.fujitsu.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

Reading git-diff-tree failed