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 [Xen-devel] Re: Xen TCP/UDP checksum problems
 
To: Ulrich Weber <uweber@xxxxxxxxxx>, xen-users@xxxxxxxxxxxxxxxxxxx, 	xen-devel@xxxxxxxxxxxxxxxxxxxFrom: Tim Durack <tdurack@xxxxxxxxx>Date: Tue, 11 Oct 2005 10:46:21 -0400Delivery-date: Tue, 11 Oct 2005 14:43:47 +0000Domainkey-signature: a=rsa-sha1; q=dns; c=nofws; s=beta; d=gmail.com;	h=received:message-id:date:from:to:subject:in-reply-to:mime-version:content-type:references;	b=lnd5DtBOAwc792dQPComV3+dxND7+PPNlnlz0OrpvXL1VqQrDu1LPdlDaWf9CpuPjR3FlGBQrPkRj5/khcp76QOheW+7D0mx8IJXJlFCmQPJHvFSdLjKb2rhtooifEuTbXk28V16oWvsAmMBHw1ZMhkOAe3e24KnA02byUREWGc=List-id: Xen developer discussion <xen-devel.lists.xensource.com> 
 It seems to be driver related. Anything tg3/bcm broadcom based.   A bridged setup doesn't exhibit the problem.   A routed setup has tcp/udp checksum problems. You can make routed work by building gre tunnels on top of the eth0/vifx.1 virtual point-to-point links. These extra encapsulation seems to avoid whatever the checksum offload problem is. Ugly but it works.
   Sorry I don't have anything better to offer.   Tim:>
 
 On 10/11/05, Ulrich Weber <uweber@xxxxxxxxxx> wrote:
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 Hi Tim,
 
 you worte about tcp/udp checksum errors in xen users mailing list.
 I currently have the same problems with latest xen unstable.
 
 Any success from your side so far with this problem ?
 
 Best regards
 Ulrich
 
 http://lists.xensource.com/archives/html/xen-users/2005-08/msg00306.html
 
 - --
 Ulrich Weber <uweber@xxxxxxxxxx> | Software Engineer
 Astaro AG | 
www.astaro.com | Phone +49-721-25516-248 | Fax -200
 Amalienbadstrasse 36 / Bau 33a | 76227 Karlsruhe | Germany
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