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[Xen-users] guest only networking

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-users] guest only networking
From: Gary Koskenmaki <garyk@xxxxxxxxxxxxx>
Date: Mon, 16 Feb 2009 14:30:40 -0800
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I'm trying to use Xen in the following way and having a real problem
getting it to work.  

What I'm using Xen for is to run both production and development web
servers, a database server, and a mail server on different DomU's.  All
of them obviously need some type of web access, if only for system
patching.  What I would like to do is use DomU-only networking between
the web and database servers in addition to the publicly accessible ip
addresses for those servers.  

Is this possible?  So far all my attempts at it have failed.  I can
successfully set up two publicly available ip addresses on the DomU's
using separate NICs on Dom0, but any time I try using a single NIC and a
purely virtual network on the DomU's the DomU's lose all networking
capability.  Interfaces that were reachable from other physical machines
are no longer pingable and report they are disconnected from the network
from inside the DomU itself.     

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