From mboxrd@z Thu Jan  1 00:00:00 1970
From: Patrick McHardy <kaber@trash.net>
Subject: Re: cups slow on linux-2.6.24
Date: Fri, 01 Feb 2008 07:10:09 +0100
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Cc: David Miller <davem@davemloft.net>, kadlec@blackhole.kfki.hu,
	jeff.chua.linux@gmail.com, linux-kernel@vger.kernel.org,
	ole@ans.pl, cups-bugs@easysw.com, netfilter-devel@vger.kernel.org
To: David Newall <davidn@davidnewall.com>
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David Newall wrote:
> I'm not debating that checksums are wrong. The question was how and
> where? It's not as if there are any unreliable communication paths in a
> loopback interface, so it's surprising that they could be wrong. How? Where?
> 

As I said, loopback doesn't perform full checksum calculation.
Its simply an optimization, nothing to worry about ...