OpenDeploy 5.6 in MS Cluster

System

Hi,

I've OD 5.6 running on Win2K in a MS clustered environment.
We have 1 virtual IP shared by the 2 clustered servers.
Our client is a Unix box.
While deploying from one of the servers, the unix machine doesn't recognize the incoming request to be from a virtual address.
Am I supposed to add 2 separate IP addresses in the odnodes.xml of my receiver?
Are the 2 clustered servers supposed to be treated as 2 independent servers or as one single virtual host?

Thanks in advance