netdev - Re: incorrect cksum with tcp/udp on lo with 2.6.20/2.6.21/2.6.22

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Message-ID: <20071002141749.GA31978@gondor.apana.org.au>
Date:	Tue, 2 Oct 2007 22:17:49 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Krzysztof Oledzki <olel@....pl>
Cc:	netdev@...r.kernel.org
Subject: Re: incorrect cksum with tcp/udp on lo with 2.6.20/2.6.21/2.6.22

On Tue, Oct 02, 2007 at 04:15:15PM +0200, Krzysztof Oledzki wrote:
>
> I'm not sure if we should call it a bug. LVS does not support such 
> configuration by default - it requires kernel patching. However, it worked 
> with older kernels so that's why I asked if it is possible to force full 
> TCP/UDP checksum calculation?

This is no different than DNATing a packet originally destined
for lo to eth0, which works fine BTW.  So that LVS patch or LVS
itself should be fixed to do the right thing.

Cheers,
-- 
Visit Openswan at http://www.openswan.org/
Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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