From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Miller <davem@davemloft.net>
Subject: Re: Kernel-DOS error in arp mechanism
 =?iso-2022-jp-3?B?GyQoUSN8GyhC?= no delete off incomplete arp adresses
Date: Wed, 21 Dec 2011 15:47:34 -0500 (EST)
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Cc: richard.weinberger@gmail.com, gladewitz@gmx.de,
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From: Eric Dumazet <eric.dumazet@gmail.com>
Date: Wed, 21 Dec 2011 10:51:12 +0100

> [PATCH] ipv4: reintroduce route cache garbage collector
> 
> Commit 2c8cec5c10b (ipv4: Cache learned PMTU information in inetpeer)
> removed IP route cache garbage collector a bit too soon, as this gc was
> responsible for expired routes cleanup, releasing their neighbour
> reference.
> 
> As pointed out by Robert Gladewitz, recent kernels can fill and exhaust
> their neighbour cache.
> 
> Reintroduce the garbage collection, since we'll have to wait our
> neighbour lookups become refcount-less to not depend on this stuff.
> 
> Reported-by: Robert Gladewitz <gladewitz@gmx.de>
> Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>

Applied, thanks Eric.