Re: [Xen-users] dom0 networking disabled

["Kirk Brown" <kbrown@xxxxxxxxxxxxx>]

Hi jez, thanks for the advice - it worked perfectly. To clarify for others
having the same problem - I was using the xen bridge script which would
kill the networking for Dom0, but work with the DomU's. The fix was to
*not* use xen's bridging.

My original /etc/network/interfaces looked like this:

auto lo
iface lo inet loopback

auto eth0
iface eth0 inet static
        address XXX.XXX.XXX.XXX
        netmask 255.255.255.0
        gateway XXX.XXX.XXX.XXX

and in the xend-config, I had:
(network-script network-bridge)


The fix was to set up the bridge directly in /etc/network/interfaces by
changing eth0 to:

auto xenbr0
iface xenbr0 inet static
        address XXX.XXX.XXX.XXX
        netmask 255.255.255.0
        gateway XXX.XXX.XXX.XXX
        bridge_ports eth0

and use the network-dummy in xend-config:
(network-script network-dummy)

Reboot and everything comes up OK.

Thanks again!

K

> Hi Kirk
>
> I've looked through the information that you posted but I can't see
> anything wrong with any of it.
>
> I reckon that you should bypass the network-bridge script and just use
> your own bridge set up in /etc/network/interfaces. It's insanely easy to
> set up, and if nothing else it might shed some more light on your
> predicament.
>
> Here are the steps to take:
>
> 1. Change your /etc/network/interfaces to look like this. Make sure you
>    remove or comment out your previous eth0 entry:
>
>     auto lo
>     iface lo inet loopback
>
>     auto xbr0
>     iface xbr0 inet static
>             address 146.6.135.253
>             netmask 255.255.255.0
>             gateway 146.6.135.1    # <- put your gateway here
>             bridge_ports eth0
>
> 2. Change your xend-config.sxp to read:
>
>     (network-script network-dummy)
>     (vif-script vif-bridge)
>
> 3. Double check that the settings for xbr0 in /etc/network/interfaces
>    are exactly the same as eth0 previously had. Then when you are
>    satisfied, reboot.
>
> If your computer resurfaces, and you can contact it over the network,
> then the bridge is up. If not, well eh ... you're own your own mate!
>
> Now when you start each of the DomU's xen should put the vif*.0
> interfaces on your bridge. All in all, I think you'll find that
> this is a much more transparent configuration.
>
> Let us know how you get on.
>
> jez
>
>
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> http://lists.xensource.com/xen-users
>



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