I need to configure a PC to communicate mainly on network 10.11.0.0, however one piece of software on this PC (GE Fanuc Proficy iFix MBE [MODBUS over ethernet] driver) needs to communicate with a MODBUS gateway with address 10.12.17.17 on network 10.12.0.0.
All equipment shares the same physical network. The IP address of the MODBUS gateway (10.12.17.17) must stay the same.
I want to do this with a single physical NIC, and I can't simply add a second IP address to the NIC via the usual way (TCP/IP .. Properties .. Advanced) because the software seems to get confused when it's pointed to a NIC with two IP addresses.
This leaves me to think of other possibilities, such as:
* Can I install some kind of virtual NIC driver/application which operates through the physical NIC?
* Can I add some kind of static route to get around this?
* Perhaps software NAT could be configured on this PC?
Is there a neat way to do this, or should I just install a second physical NIC & patch it to the same switch?