netdev - Re: IPv6: autoconfiguration and suspend/resume or link down/up

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Message-ID: <20110722092159.GA20722@gondor.apana.org.au>
Date:	Fri, 22 Jul 2011 17:21:59 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	David Miller <davem@...emloft.net>
Cc:	jbohac@...e.cz, netdev@...r.kernel.org, shemminger@...tta.com
Subject: Re: IPv6: autoconfiguration and suspend/resume or link down/up

On Fri, Jul 22, 2011 at 01:06:28AM -0700, David Miller wrote:
> 
> Suspend is even more important because while we were suspended we
> could be on the same network but the routers present and available
> might have changed completely.

Unfortunately virtual machine live migration also uses the suspend
& resume mechanism.  In that case we don't wish to renegotiate
everything, since the goal is to minimise the outage window.

This would suggest that putting the policy in user-space may be the
best option.

Cheers,
-- 
Email: Herbert Xu <herbert@...dor.apana.org.au>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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