Re: [Xen-users] Xen 3.1 networking questions

[Nico Kadel-Garcia <nkadel@xxxxxxxxx>]

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=10.0.1.1 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=10.0.1.1 seems to ensures that dom0 gets the address
> 10.0.1.128 whereas it otherwise could get 10.0.2.128 or whatever and
> makes it impossible to use a not dhcp setup with routing.
>
> At least this is what I vague remember ...
>
> Jens
>   
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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