How to add additional LAN subnets on mushroom ?

This can be done using the bridge alias feature under the advanced tab on Mushroom’s UI.

The Bridge Alias is used to add a subnet alias to the LAN interface. This feature is useful if you want mutliple subnets on your local network.

Note: DHCP can only be enabled on the primary LAN subnet.

If you want to provide layer-3 filtering between the primary and secondary subnets, please see this document.