PLCS¡m + NetToPLCSim + multiple connections

Hi,
I'm trying to perform a SCADA migration. I have no PLC so I'm using NetToPLCSim to connect to SIEMENS STEP7 PLCSim via Ethernet.

It works OK when there's only one connection. But it doesn't work with two connections.

I'd like connect both SCADAs, old & new, against the simulation environment (see below).


[Machine#1: OLD SCADA]<-Eth.->[Machine#2: NetToPLCSim + PLCSim]<-Eth.->[Machine#3: NEW SCADA]

Does NetToPLCSim accept more than one simultaneous connection?

Is there some way to make NetToPLCSim accept more than one simultaneous connection?

Thanks, Jon.