linux-kernel - Re: [PATCH linux-2.6 v2] IPv6: Temp addresses are immediately deleted.

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Date:	Tue, 26 Oct 2010 12:19:41 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	gwurster@....carleton.ca
Cc:	kuznet@....inr.ac.ru, pekkas@...core.fi, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net, shemminger@...tta.com,
	eric.dumazet@...il.com, herbert@...dor.hengli.com.au,
	ebiederm@...ssion.com, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH linux-2.6 v2] IPv6: Temp addresses are immediately
 deleted.

From: Glenn Wurster <gwurster@....carleton.ca>
Date: Sat, 16 Oct 2010 14:42:17 -0400

> This patch accommodates the case where the router is only broadcasting 
> advertisements every x seconds, and yet the user has set the valid_lft to be 
> something less than x.  In this setup, the condition I mentioned in the patch 
> description happens, where the new temporary address is created, but the last 
> modification time on that temporary address is set to the time of the last 
> router advertisement, which was more than valid_lft seconds ago.  In this 
> case, the temporary address is immediately deleted, and we are left with no 
> temporary address on the interface.  Furthermore, because all temporary 
> addresses get deleted by the time the next router advertisement arrives, we 
> are left with not being able to use temporary addresses until we move 
> networks.

Thanks for the information, I'll look into this some more.
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