netdev - Re: fe80::/64 route missing on GRE tunnels

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Message-ID: <5301E59F.5090506@6wind.com>
Date:	Mon, 17 Feb 2014 11:34:07 +0100
From:	Nicolas Dichtel <nicolas.dichtel@...nd.com>
To:	netdev@...r.kernel.org, itk-intern@...fundet.no,
	Hannes Frederic Sowa <hannes@...essinduktion.org>,
	sesse@...fundet.no
Subject: Re: fe80::/64 route missing on GRE tunnels

Le 17/02/2014 11:17, Steinar H. Gunderson a écrit :
> On Mon, Feb 17, 2014 at 10:59:38AM +0100, Nicolas Dichtel wrote:
>>> It is added (ip -6 addr add fe80::1 dev foo), but it doesn't help without the
>>> /64 being present.
>> With 'ip -6 addr add fe80::1/64 dev foo', the link local route will be added.
>
> Possible, but you're still breaking userspace. You could argue the tunnel
> setup system in question should have added a /64 in the first place, but it
> is deployed at a number of locations and changing all of them is not trivial.
I will propose a patch (instead of reverting the original one).
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