From mboxrd@z Thu Jan  1 00:00:00 1970
From: Florian Westphal <fw@strlen.de>
Subject: Re: [BUG] problems with "ip xfrm" on 32-bit userspace with 64-bit
 kernel
Date: Thu, 21 Oct 2010 09:50:56 +0200
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	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
To: Chris Friesen <chris.friesen@genband.com>
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Chris Friesen <chris.friesen@genband.com> wrote:
> We've run into a 32/64 compatibility problem with iproute2.  The "ip
> xfrm monitor acquire" command doesn't work properly due to struct size
> mismatches between kernel and userspace.

Yes.  See archives for 'xfrm: add x86 CONFIG_COMPAT support'
(http://marc.info/?t=127050655600003&r=1&w=2)

for a discussion on why the patch set to fix this was rejected.