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ipv6: don't flush routes when setting loopback down

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When loopback device is being brought down, then keep the route table
entries because they are special. The entries in the local table for
linklocal routes and ::1 address should not be purged.

This is a sub optimal solution to the problem and should be replaced
by a better fix in future.

Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Acked-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
stephen hemminger 2010-12-16 11:28:12 +00:00 committed by David S. Miller
parent 7d743b7e95
commit 29ba5fed1b
1 changed files with 3 additions and 1 deletions
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4
net/ipv6/addrconf.c
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@ -2669,7 +2669,9 @@ static int addrconf_ifdown(struct net_device *dev, int how)
ASSERT_RTNL();
rt6_ifdown(net, dev);
/* Flush routes if device is being removed or it is not loopback */
if (how || !(dev->flags & IFF_LOOPBACK))
rt6_ifdown(net, dev);
neigh_ifdown(&nd_tbl, dev);
idev = __in6_dev_get(dev);