[PVE-User] Proxmox 2.1 'internal' network

Alexandre Kouznetsov alk at ondore.com
Fri Sep 14 00:04:31 CEST 2012

El 12/09/12 06:24, Flavio Stanchina escribió:
> Fábio Rabelo wrote:
>> And for internal comunication within VMs, I use a dummy network card,
>> put something like this in your /etc/network/interfaces
>> auto vmbr3
>> iface vmbr3 inet static
>>          bridge_ports dummy0
>>          bridge_maxwait 0
>>          address
>>          netmask
> You don't need a dummy port, just create a new bridge without physical
> ports.

That is correct. Even if you need a referenciable interface on the Dom0, 
the bridge itself is good enough.

Since your ifup-ifdown scripts could have difficulties recognizing your 
interface as a bridge (and perform the correct underlaying actions), a 
good workaround is to make it specifically manual:

auto xenbr99
iface xenbr99 inet manual
   up brctl addbr xenbr99
   up brctl stp xenbr99 off
   up ip addr add dev xenbr99
   up ip link set xenbr99 up
   down ip link set xenbr99 down
   down ip addr del dev xenbr99
   down brctl delbr xenbr99

Alexandre Kouznetsov

More information about the pve-user mailing list