netdev - Re: [PATCHv2] IPv6: Allow the MTU of ipip6 tunnel to be set below 1280

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Message-Id: <20131007.123324.1905399400311888938.davem@davemloft.net>
Date:	Mon, 07 Oct 2013 12:33:24 -0400 (EDT)
From:	David Miller <davem@...emloft.net>
To:	hannes@...essinduktion.org
Cc:	ou.ghorbel@...il.com, kuznet@....inr.ac.ru, jmorris@...ei.org,
	yoshfuji@...ux-ipv6.org, kaber@...sh.net, netdev@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCHv2] IPv6: Allow the MTU of ipip6 tunnel to be set below
 1280

From: Hannes Frederic Sowa <hannes@...essinduktion.org>
Date: Fri, 4 Oct 2013 15:32:23 +0200

> On Thu, Oct 03, 2013 at 02:49:26PM +0100, Oussama Ghorbel wrote:
>> The (inner) MTU of a ipip6 (IPv4-in-IPv6) tunnel cannot be set below 1280, which is the minimum MTU in IPv6.
>> However, there should be no IPv6 on the tunnel interface at all, so the IPv6 rules should not apply.
>> More info at https://bugzilla.kernel.org/show_bug.cgi?id=15530
>> 
>> This patch allows to check the minimum MTU for ipv6 tunnel according to these rules:
>> -In case the tunnel is configured with ipip6 mode the minimum MTU is 68.
>> -In case the tunnel is configured with ip6ip6 or any mode the minimum MTU is 1280.
>> 
>> Signed-off-by: Oussama Ghorbel <ou.ghorbel@...il.com>
 ...
> Acked-by: Hannes Frederic Sowa <hannes@...essinduktion.org>

Applied, but please do not capitalize "IPv6" when using it as a subsystem
prefix in Subject lines.

Thanks.
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