Yes, I am hoping someone is around that knows more about configuring NAT than I do.
Is it possible to have a single router do multiple NAT translations (for the different VLANs) but for the same IP address?
Sending from PC to UUT Case 1
From NIC1: [Source address 192.168.0.1, Destination address 192.168.0.x] --> ESL--> VLAN 2 --> ER/NAT --> [Source address doesn't matter, Destination address 10.100.4.200]
Sending from UUT to PC Case 1
From UUT: [Source address 10.100.4.200, Destination address 10.100.4.201] --> ESL--> VLAN 2 --> ER/NAT --> [Source address doesn't matter, Destination address 192.168.0.1]
Sending from PC to UUT Case 2
From NIC2: [Source address 192.168.0.2, Destination address 192.168.0.x] --> ESL--> VLAN 3 --> ER/NAT --> [Source address doesn't matter, Destination address 10.100.4.200]
Sending from UUT to PC Case 2
From UUT: [Source address 10.100.4.200, Destination address 10.100.4.201] --> ESL--> VLAN 3 --> ER/NAT --> [Source address doesn't matter, Destination address 192.168.0.2]
... And so on for a total of 8 Cases of this.
EDIT: I was typing this after goldline's last reply. Didn't see the two new ones