multiple virtual bridges for one eth0

[stagefright]

Hi,
I want to create different networks tied to a single network card . i figured that i can create bridges that are not tied to any NICs and yet assign an ip range to them .

i want the following functionality


create two networks
10.10.10.0/24
11.11.11.0/24
and both these "NAT" to my eth0 and also my vms shud get their ips thru dhcp on their own

i tried these
http://pve.proxmox.com/wiki/Network_Model
http://wiki.debian.org/BridgeNetworkConnections#Manual_bridge_setup

but all i get is if i assign ip to my windows vm manually it is able to reach the gateway (as in 11.11.11.1 or 10.10.10.1)
no nat / i am unable to reach the net

i dont mind subinterfacing eth0 but that dont work either

 

[stagefright]

well the proxmox bridge vmbr2 (10.10.10.1) is able to access the internet
traceroute 8.8.8.8 -s 10.10.10.1 is successful

however inside the vm (10.10.10.2)
tracert 8.8.8.8
gives only one hop to 10.10.10.1
and no further

why is the packet not going further ?

. is there a way i can get proxmox node to act as a dhcp server ? like virt-manager on rhel/fedora does ? please see the attached image