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Re: [Xen-users] Xen 3.1 networking questions

To: xen-users@xxxxxxxxxxxxxxxxxxx
Subject: Re: [Xen-users] Xen 3.1 networking questions
From: Nico Kadel-Garcia <nkadel@xxxxxxxxx>
Date: Thu, 15 Nov 2007 18:40:33 +0000
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Jens Seidel wrote:
On Thu, Nov 15, 2007 at 02:43:50PM +0000, Nico Kadel-Garcia wrote:
Florian Engelmann wrote:
how to hardcode a vif interface?

Nico Kadel-Garcia schrieb:
Florian Engelmann wrote:
Ok at the moment I use NAT and i can connect to the internet, but I always have to change the router. Xen starts a new vifx.0 interface which is my domUs router. The IP changes every time. How to fix that???
Don't use "ip=", use "mac=" and either use DHCP or set the IP address in the operating systemm itself. You can also hardcode the vif instance, and I recommend this for network monitoring reasons.
It should be in your documentation. You use  something like:

   vif=[ 'vifname=xen.(whatever), mac=00:16:3E:01:(whichever), ' ]

I think I remember that I also needed the ip= argument. Not to
initialise the network in the domU (I do this via ifconfig, route) but
the get the IP address of the dom0 (=gateway) in the 10.x.x.x network.

Specifying ip= seems to ensures that dom0 gets the address whereas it otherwise could get or whatever and
makes it impossible to use a not dhcp setup with routing.

At least this is what I vague remember ...

This is definitely not the case. I recently built about 40 Xen guest domains with the MAC address and vifnames hardcoded, and all other network setttings done by the guest OS.

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