netdev - loosing connections on bridge topology changes

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Date:	Wed, 13 May 2009 17:13:41 +0200
From:	Karl Hiramoto <karl@...amoto.org>
To:	netdev@...r.kernel.org
Subject: loosing connections on bridge topology changes

Hi,

I have a user space application, that puts eth0 into bridge br0.  At 
this moment all connections seem frozen. Telnet, HTTP, and NFS.

For development i have nfs root fs.

There is a ioctl() that does the equivalent of "brctl addif br0 eth0"

That cuts all the connections for a few seconds.

nfs: server 192.168.10.51 not responding, still trying
br0: topology change detected, propagating           
br0: port 1(eth0) entering forwarding state          
nfs: server 192.168.10.51 not responding, still trying
nfs: server 192.168.10.51 OK                         
nfs: server 192.168.10.51 OK  

Then everything is OK..

Is there anyway i can fix this, so my applicaion goes ahead at full speed?

using libnl i tried flushing the ARP cache on all devices, but it didn't 
seem to help.

Thanks
--

Karl.

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