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Date:	Sun, 29 Mar 2015 12:42:48 -0700 (PDT)
From:	David Miller <davem@...emloft.net>
To:	klamm@...dex-team.ru
Cc:	netdev@...r.kernel.org, hannes@...essinduktion.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] net: sysctl for RA default route MTU

From: Roman Gushchin <klamm@...dex-team.ru>
Date: Thu, 26 Mar 2015 14:49:54 +0300

> This patch introduces new ipv6 sysctl: ra_default_route_mtu.
> If it's set (> 0), it defines per-route MTU for any new default route
> received by RA.
> 
> This sysctl will help in the following configuration: we want to use
> jumbo-frames for internal networks and default ethernet frames for
> default route. Per-route MTU can only lower per-link MTU, so link MTU
> should be set to ~9000 (statically or via RA).
> 
> Due to dynamic nature of RA, setting MTU for default route will require
> userspace agent, that will monitor changes of default route
> and (re)configure it. Not simple. The suggested sysctl solves this
> problem.
> 
> Signed-off-by: Roman Gushchin <klamm@...dex-team.ru>

This does not apply cleanly to net-next, please respin.
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