[Xen-users] Re: Jeremy's GIT-tree and network problems

[Stephan Seitz <stse+xen@xxxxxxxxxxxxxxxxxxx>]

On Wed, Dec 30, 2009 at 12:41:53AM +0100, Markus Schuster wrote:
> now - I wanted to start a thread of it's own later on - but could you 
> try to lower the MTU of the interfaces that connects dom0 and domU to 
> maybe 1400?
Yes I can try it, but I donât think this will work.

> Have you tried pinging an external IP address from dom0? Do you see the
> following message in dom0s dmesg:
> [2097720.211014] Attempting to checksum a non-TCP/UDP packet, dropping a
> protocol 1 packet
Yes, I was using ping for the connectivity check (together with other 
tests). No, I never saw this line.
> I see this message for ICMP traffic (and only for ICMP traffic!) between two
> domUs in a setup similar to yours.
> Maybe we suffer from the similar problem?
Doesnât think so. My problem seems to be, that my network traffic to the 
Internet is getting lost at the NIC bridge that connects the DSL modem to 
the DomU if the traffic is generated by Dom0 (with DomU as the gateway) 
but not it the traffic is generated by DomU.
Shade and sweet water!

        Stephan

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