From cd174e67a6b312fce9bab502ba2b0583e11f537f Mon Sep 17 00:00:00 2001
From: Hannes Frederic Sowa <hannes@stressinduktion.org>
Date: Sat, 14 Dec 2013 05:13:45 +0100
Subject: [PATCH] ipv4: new ip_no_pmtu_disc mode to always discard incoming
 frag needed msgs

This new mode discards all incoming fragmentation-needed notifications
as I guess was originally intended with this knob. To not break backward
compatibility too much, I only added a special case for mode 2 in the
receiving path.

Signed-off-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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