linux-kernel - Re: IPSEC in 2.6.25 causes stalled connections

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Message-ID: <20080709084334.GA12484@gondor.apana.org.au>
Date:	Wed, 9 Jul 2008 16:43:34 +0800
From:	Herbert Xu <herbert@...dor.apana.org.au>
To:	Thomas Zeitlhofer <tzeitlho+lkml@...tuwien.ac.at>
Cc:	linux-kernel@...r.kernel.org, netdev@...r.kernel.org
Subject: Re: IPSEC in 2.6.25 causes stalled connections

On Tue, Jul 08, 2008 at 11:33:02PM +0200, Thomas Zeitlhofer wrote:
>
>    (1) Use two (virtual) machines kvm1 and kvm2 and configure an IPSEC
>        connection between them.
>    (2) Watch the interface of one machine with nload or a similar tool
>    (3) kvm1:~# cat /dev/zero | netcat -l -p 12345 &
>    (4) kvm2:~# cat /dev/zero | netcat -l -p 12345 &
>    (5) kvm1:~# netcat kvm2 12345 >/dev/null
> 
>    According to (2), the packet flow from kvm2 to kvm1 can bee watched
>    now and everything works fine.
> 
>    (6) kvm2:~# netcat kvm1 12345 >/dev/null

Thanks! I've reproduced the problem.  Now we just need to figure
out what it is :)

Cheers,
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Email: Herbert Xu ~{PmV>HI~} <herbert@...dor.apana.org.au>
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