On Wed, Jul 28, 2010 at 11:58:25AM +0200, David Lamparter wrote:
> unshare -n -- /bin/bash -c 'ip link add link lo veth0 type veth peer
>       name veth3 netns 1; brctl addbr br0; \
>       ip l s br0 up; sleep 8; ip l s br0 down; sleep 1;
>       ip l s br0 up; sleep 8;'
>
> I get "usage count = 7" on lo; when I add another up & down, I get
> "usage count = 10". 4 times makes it a merry 13 refs...

It only happens with BRIDGE_IGMP_SNOOPING. As we don't need that, our
"fix" is just to run with it disabled... works pretty fine.

Herbert, you implemented bridge multicast support, maybe you can figure
out where these references are taken?


-David

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