Adding a Secondary Subnet

To add a secondary subnet using the Static ARP method

1. Add a published static ARP entry for the gateway address that is used for the secondary subnet, assigning it the MAC address of the appliance interface to which it is connected.
2. Add a static route for that subnet, so that the appliance regards it as valid traffic, and knows to which interface to route that subnet's traffic.
3. Add access rules to allow traffic destined for that subnet to traverse the correct network interface.
4. Optional: Add a static route on upstream device(s) so that they know which gateway IP to use to reach the secondary subnet.