Emulate port mirroring between VMs

[jmpfas]

I am adding a service that requires port mirroring. i.e. if all my VMs were physical servers I would set up port mirroring on the network switch, sending all matching traffic to/from certain physical switch ports to one port, where software running on a different server would capture it.

I believe that this is possible in proxmox (about to upgrade to 4.3), but I cannot find a definitive answer.

Does anyone know if this is possible? It may be one of those "so simple it is not documented" things.

 

[LnxBil]

I've never tried this by myself, but it should be possible with openvswitch (Proxmox VE supports this) according to this blog port:

http://blog.manula.org/2014/02/port-mirroring-with-openvswitch.html