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RE: [Xen-users] DomU strange network behavior

  • To: "Andrew Deagman" <andrew@xxxxxxxxxx>, <xen-users@xxxxxxxxxxxxxxxxxxx>
  • From: "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
  • Date: Wed, 24 Dec 2008 16:08:44 +1100
  • Cc:
  • Delivery-date: Tue, 23 Dec 2008 21:09:40 -0800
  • List-id: Xen user discussion <xen-users.lists.xensource.com>
  • Thread-index: AcllV13rQJsGAxcgRK+YYtXxjgCEzAALMufQ
  • Thread-topic: [Xen-users] DomU strange network behavior

> I  am experiencing strange network behavior from several DomU's. I can
> from DomU to any host on the local lan/vlan, I can ping those hosts.
> However when I go to resolve a hostname DNS fails. I have verified
> three other DomU's are exhibiting the same behavior. I have also
> that Dom0 is functioning properly and can resolve hostnames and access
> hosts outside of the lan/vlans. Any ideas on what is going on? I have
> verified that networking looks to be working properly.  I am using a
> custom network script and Ethernet bonding. This has me particularly
> stumped as I do not see anything in the logs to indicate why name
> resolution would be failing. Here is the output of my configuration.
> more information is needed let me know.

The easiest thing to try is to turn off checksum offload on the vifX.Y
interfaces using ethtool.


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