Re: [Xen-users] Xenbr0

[Thomas Harold <tgh@xxxxxxxxxxxx>]

Eric Benton wrote:
> Hi List,
>
> Is it possible to start a DomU or HVM with the same IP as Dom0?
> How can I achieve this?
The best way is with 2 ethernet interfaces.  One for (semi) exclusive 
use by the firewall domain (either running in Dom0 or in a DomU) and the 
2nd ethernet interface used by all of the DomUs as the "internal" side 
and connected to your LAN segment.  The firewall domain then does the 
NAT duties to move traffic between the two ethernet interfaces.
Tom Eastep over at Shorewall does this one his systems:

http://www.shorewall.net/XenMyWay.html
- Firewall is in a DomU

http://www.shorewall.net/XenMyWay-Routed.html
- Firewall is in the Dom0

(Just toss a cheap linux-compatible NIC in a PCI slot for the external 
interface if needed.)
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