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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20101026.121941.98879640.davem@davemloft.net>
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.
--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html