RE: [Xen-users] tcp checksum errors across dom0-domu bridge

["Ian Pratt" <m+Ian.Pratt@xxxxxxxxxxxx>]

> My xen setup is having trouble communicating between dom0 and 
> domu.  The dom0 and domUs have no problem communicating 
> outside the physical machine, and the domUs can even talk to 
> each other with no problems, but dom0-domU comms is a no-go.
> 
> I am running gentoo x86 and xen-3.0.0.  The xend 
> network-bridge script didn't seem to work at all, so I 
> disabled it and use a bridge configured by gentoo (see dom0 
> network info below).  The domUs use vanilla xend bridge 
> networking (see dom1 network info below).
> 
> Now the dom0 and domU can ping each other, and even establish 
> a tcp connection, but dom0->domU tcp packets always seem to 
> have a failing checksum. (see tcpdump trace of a telnet session below)

Are you getting 'insufficient headroom' message in the domU? (see
dmesg).

If so, upgrade to a newer 3.0.0 build number - the RPMs on the web site
should already be updated.

Ian

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