Goal: Configure Opnsense to handle internet routing and use the L3 switch to handle Inter-VLAN routing:
In this configuration, the Opnsense VM performs firewall, packet inspection, and internet routing along with optional services like, Unbound DNS and DHCP (Kea). The L3 switch performs inter-VLAN routing between Opnsense and the VLANs. A Gateway is created in Opnsense along with static routes for returning internet packets to the correct subnets over a Transit VLAN.