netdev - Re: Routing tables associated with VLANs dissappear when parent ethX down/up

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Date:	Wed, 21 Nov 2007 21:25:34 +0100
From:	Patrick McHardy <kaber@...sh.net>
To:	Stephen Hemminger <shemminger@...ux-foundation.org>
CC:	Ben Greear <greearb@...delatech.com>,
	NetDev <netdev@...r.kernel.org>
Subject: Re: Routing tables associated with VLANs dissappear when parent ethX
 down/up

Stephen Hemminger wrote:
> On Wed, 21 Nov 2007 11:51:43 -0800
> Ben Greear <greearb@...delatech.com> 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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