MSCS CLuster & MS VS 2005 Mac address problem

Hello

I have set up a mscs cluster on w2K3 SP2 r2 with ms VS 2K5 r2 sp1 ent
on a iscsi SAN storage.

I started with one vm using the guide provided by microsoft. network on
my vm is ok on node 1. When i failover the VM, network is unreachable on
the VM without any error in the MS VS log, i can see that packets are
sent from the vm but nothing is received. when i try to set static MAC @
on the VM, i have an error on the second node after failover with a "VM
canno't connect to virtual network because an other computer with MAC @
is already running. this virtual NIC will stay disconnected".


can somebody help ?
Thks
Fadoul