netdev - RE: [PATCH 1/1] ipv6 addrconf:fix preferred lifetime state-changing behavior while valid

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Date:	Thu, 12 Dec 2013 00:58:10 +0000
From:	"Asano, Yasushi" <yasushi.asano@...fujitsu.com>
To:	Hannes Frederic Sowa <hannes@...essinduktion.org>
CC:	"netdev@...r.kernel.org" <netdev@...r.kernel.org>
Subject: RE: [PATCH 1/1] ipv6 addrconf:fix preferred lifetime state-changing
 behavior while valid_lft is infinity

> -----Original Message-----
> From: netdev-owner@...r.kernel.org
> [mailto:netdev-owner@...r.kernel.org] On Behalf Of Hannes Frederic Sowa
> Sent: Tuesday, December 10, 2013 8:47 AM
> To: Asano, Yasushi
> Cc: netdev@...r.kernel.org
> Subject: Re: [PATCH 1/1] ipv6 addrconf:fix preferred lifetime
> state-changing behavior while valid_lft is infinity
> Importance: High
> 
> On Mon, Dec 09, 2013 at 05:54:37AM +0000, Asano, Yasushi wrote:
> > from: Yasushi Asano  <yasushi.asano@...fujitsu.com>
> >
> > There is a problem when setting the lifetime of an IPv6 address.
> > When I set preferred_lft to a value not zero or infinity, while valid_lft
> is infinity(0xffffffff)
> > preferred lifetime is set to forever and does not update.
> > Therefore preferred lifetime never becomes deprecated.
> >
> > I think valid lifetime and preferred lifetime should be set independently,
> > even if valid lifetime is infinity, preferred lifetime must expire
> correctly (meaning it must eventually become deprecated)
> >
> > I made a patch for 3.12 stable to solve the problem.
> 
> This indeed could be improved. Thanks for the patch. But you should base
> it on net-next so it can be applied and please clean up the warnings
> and errors if you run the patch through ./scripts/checkpatch --strict.
> 
> Thank you,
> 
>   Hannes
> 
I made a patch based on net-next and emailed ML using git send-email last night.

Subject: [PATCH 1/1] ipv6 addrconf:fix preferred lifetime state-changing behavior while valid_lft is infinity
Date: Wed, 11 Dec 2013 19:57:32 +0900
Message-ID: <1386759452-22159-1-git-send-email-yasushi.asano@...fujitsu.com>
X-Mailer: git-send-email 1.7.12.4

Thank you for your time and assistance regarding this matter.
Yasushi