On a decidated root server with 1+X public IP addresses in a hosted environment, running Debian Lenny with Xen 3.2, I want to install multiple domUs. Bridged network route is not an option due to hosting company requirements. They recommend routed setup but as far as I can understand this requires spending two public IPs on the dom0 which I can't affort.
In my setup, X domUs will have a public facing IP address and should be reachable from the network. Other domUs should be in private subnets (e.g. 10.0.. / 192.168..) and not reachable from the outside. domUs in the same private subnets should be able to reach each other but not domUs in other private subnets. A plus would be if all traffic (incl. the domUs with public IP addresses) were routed through the dom0 which could act as firewall (iptables?).
Is there anybody who has a similar setup as I and is willing to share some configuration files and tips?