If your Nethserver isn’t the gateway of your lan, put a route on your gateway (router or firewall) that redirect all packets for X.Y.110.0 to the IP of green network of the Nethserver.
If your Nethserver isn’t the gateway of your lan, put a route on your gateway (router or firewall) that redirect all packets for X.Y.110.0 to the IP of green network of the Nethserver.