From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: [PATCH v3] net: sysctl for RA default route MTU
Date: Tue, 31 Mar 2015 16:49:23 -0400 (EDT)
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From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Tue, 31 Mar 2015 22:35:48 +0200

> Could you quickly comment on what you had in mind? I guess it is about
> handling RA in user space on the end hosts and overwriting MTU during
> insertion of the routes?

Even after reading your email I have no idea why you can't just have
RA provide a 1500 byte MTU, everything else uses the device's 9000
MTU, problem solved?