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ipv6: don't flush routes when setting loopback down 

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);