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Date: Fri, 15 Apr 2011 09:01:46 +0200
From: Hans Schillstrom <hans@...illstrom.com>
To: Julian Anastasov <ja@....bg>
Cc: Simon Horman <horms@...ge.net.au>, netdev@...r.kernel.org,
lvs-devel@...r.kernel.org,
"Eric W. Biederman" <ebiederm@...ssion.com>
Subject: unregister_netdevice: waiting for lo to become free. Usage count = 8
Hello Julian
I'm trying to fix the cleanup process when a namespace get "killed",
which is a new feature for ipvs. However an old problem appears again
When there has been traffic trough ipvs where the destination is unreachable
the usage count on loopback dev increases one for every packet....
I guess thats because of this rule :
# ip route list table all
...
unreachable default dev lo table 0 proto kernel metric 4294967295 error -101 hoplimit 25
...
I made a test just forwarding packets through the same container (ipvs loaded)
to an unreachable destination and that test had a balanced count i.e. it was possible to reboot the container.
Do you have an idea why this happens in the ipvs case ?
Regards
Hans Schillstrom <hans@...illstrom.com>
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