I am trying to allow internet access to multiple subnets on a Draytek Vigor 2830 but so far have had no luck. The goal is to allow Internet Access from the main office network on 192.168.1.0/24 and the events wifi on 172.16.1.0/24 without communication between the two subnets. The other hardware on the network is not capable of supporting VLANs and both networks connect to the Draytek via the same port. I tried adding the second subnet via IP Routed subnet and although this appears in the Routing table there was no external connectivity.

If anyone can advise on whether this is possible on a draytek without VLAN tagging and if so the best way to configure it I'd be very grateful.