Re: [Xen-users] Virtual machine not found by network

[Rainer Sokoll <rainer@xxxxxxxxxx>]

On Thu, May 27, 2010 at 09:48:06AM -0400, Lippert, Kenneth B. wrote:

> The gateway is defined in both to be 123.456.8.254.
> 
> My virtual machine builds fine, and all seems well, but if the domU is
> inactive for a period of several minutes, with no network traffic, it
> seems the gateway forgets how to get to it.   This is manifested by
> other machines on the local 123.456.8.* network being able to ping and
> get to the domU, but machines OUTSIDE the local net cannot.  It is not a
> DNS problem , pings from 123.456.22.1 (for instance) fail even if the IP
> of the domU is specified (not just its name).

Sounds like the gateway 123.456.8.254 forgot the mac address of your
domU.
Do you have some weired firewall running on your domU blocking
arp-who-has?
Another machine with the same IP in the same broadcast domain?

Rainer

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