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Re: [Xen-users] XEN Bridged Network and NAT

from [Michael Grosseck]

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To:	Christophe Saout <christophe@xxxxxxxx>
Subject:	Re: [Xen-users] XEN Bridged Network and NAT
From:	Michael Grosseck <liox@xxxxxxxxxxxx>
Date:	Sat, 25 Sep 2010 18:55:46 +0200
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Hello Christophe,

thanks for your reply. I'm using the standard xen kernel which comeswith debian lenny on dom0 and domu.

Its 2.6.26-2-xen-amd64 #1 SMP in the moment.
I don't know if this version applies to the hacks you mentioned.


On 25.09.2010 16:15, Christophe Saout wrote:

Hi Michael,

[Note: I don't usually do this, but I'm leaving a full quote below
  because I'm not going to give answers to specific sentences]

What Dom0 kernel are you using?  The old non-pvops Dom0 kernel (unless
it has changed in the meantime) had some non-standard hacks to avoid
unnecessary checksumming of the packets between the Dom0 and DomU's.
These hacks unfortunately broke Dom0 NAT.  I believe the problem was
that outgoing packets (the packets leaving Dom0 on an actual network
card) had the wrong checksum or something like that.




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