netdev - Re: [PATCH 5 of 5] IPv6: temporary address: update the timer for tentative addresses

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]

Date:	Tue, 1 Apr 2008 23:53:25 +0200
From:	Benoit Boissinot <benoit.boissinot@...-lyon.org>
To:	YOSHIFUJI Hideaki / 吉藤英明 
	<yoshfuji@...ux-ipv6.org>
Cc:	netdev@...r.kernel.org, pekkas@...core.fi
Subject: Re: [PATCH 5 of 5] IPv6: temporary address: update the timer for
	tentative addresses

On Fri, Mar 28, 2008 at 12:25:58PM +0900, YOSHIFUJI Hideaki / 吉藤英明 wrote:
> In article <4765830d9f3848ef14e6.1206305173@...zuine> (at Sun, 23 Mar 2008 21:46:13 +0100), Benoit Boissinot <benoit.boissinot@...-lyon.org> says:
> 
> > IPv6: temporary address: update the timer for tentative addresses
> > 
> > Even for tentative addresses, we should update the timer,
> > otherwise if the preferred lifetime is too short we will
> > miss the opportunity to regenerate the adress.
> 
> Well, but it this ever happens, it implies that the lifetime
> is too short, doesn't it?
> We don't want such temporary address too much.

I do agree. In this case, short means less than ADDR_CHECK_FREQUENCY
(2 minutes), and it might be too aggressive.
In fact, I don't really know what are the consequences of running
with a very short regen for temporary addresses (let's say for example,
1 minutes preferred lifetime, and 5 minutes valid lifetime).

But it was really useful for me for testing it, and it fixes a bug
(anyway if you use too short lifetimes you'll hit the max addresses
limit really fast).

regards,

Benoit

ps: I'll resubmit the patches to which you already agreed soon.

-- 
:wq
--
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