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The Xen dom0 infrastructure provides for a bridged networking setup using shell
scripts to configure the bridging device properly and attach the domUs' virtual
interfaces to the bridge.  However, we've [seen
problems](http://lists.gnu.org/archive/html/bug-hurd/2008-08/msg00023.html)
when using this approach, so to [solve these
issues](http://lists.gnu.org/archive/html/bug-hurd/2008-09/msg00071.html),
instead suggest the following configuration method (to achieve the same thing).

This is for a Debian dom0.

# */etc/network/interfaces*

Comment out everything referencing your physical devices.  Add this:

    auto br0
    iface br0 inet dhcp
    	bridge_ports regex (eth|vif).* noregex

... or if you want to do the manual configuration dance:

    auto br0
    iface br0 inet static
    	bridge_ports regex (eth|vif).* noregex
    	address 192.168.10.60
    	netmask 255.255.255.0
    	[...]

This needs a version of the `bridge-utils` package more recent than the current
Debian stable one ([[debbug 405215]]).  (It's trivial to rebuild the `dpkg` of,
e.g., the Debian testing one on Debian stable.)

# */etc/xen/xend-config.sxp*

Make sure that only `(network-script network-dummy)` and `(vif-script
vif-bridge)` are activated and all other `(network-script network-WHATEVER)`,
respective `(vif-script vif-WHATEVER)` are commented out.