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Date:	Wed, 21 Nov 2007 21:25:34 +0100
From:	Patrick McHardy <>
To:	Stephen Hemminger <>
CC:	Ben Greear <>,
	NetDev <>
Subject: Re: Routing tables associated with VLANs dissappear when parent ethX

Stephen Hemminger wrote:
> On Wed, 21 Nov 2007 11:51:43 -0800
> Ben Greear <> wrote:
>> For consideration, this patch seems to work for me.  I'm not sure
>> why we ever listed to these events.  I've only tested on a NIC that
>> doesn't support hw-accel at the moment..will test with e1000 later.
>> Thanks,
>> Ben
> But then if you are doing bonding or bridging of vlan's 
> and you bring down the root network device, the upper layer is not
> notified (for failover).

operstate should be enough for this I guess. Ben, what does iproute show
for the vlan device when the lower device is down?

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