netdev - Re: Cannot delete a bridge using 'ip' netlink interface

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Message-ID: <4E8F62F7.4080408@msgid.tls.msk.ru>
Date:	Sat, 08 Oct 2011 00:37:11 +0400
From:	Michael Tokarev <mjt@....msk.ru>
To:	Sridhar Samudrala <sri@...ibm.com>
CC:	Stephen Hemminger <shemminger@...tta.com>,
	netdev <netdev@...r.kernel.org>
Subject: Re: Cannot delete a bridge using 'ip' netlink interface

On 06.10.2011 21:18, Sridhar Samudrala wrote:
> On a linux 3.1.0-rc9 system using the latest iproute2, i tried
> creating a bridge and deleting it with an attached interface. 
> 
> Here is the sequence of steps i tried
> ip link add br0 type bridge
> ip link set dev eth1 master br0
> ip link set br0 up
> ip link del br0
> 
> The last command hangs with the following kernel messages
> kernel:unregister_netdevice: waiting for br0 to become free. Usage count = 1

Note that the same thing happens when one tries to rmmod bridge
while it is in use.  I'm trying your patch to see if that helps... ;)

/mjt
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