@dabbelju007 said in Adding OpenVPN Interface in Interface Assignments:
Traffic from my OpenVPN network is hitting the "OpenVPNOPT" interface, not as I would expect the OPENVPN.
Without knowing your firewall rules I cannot estimate.
However, it behaves like stated in the link. The OpenVPN is an interface group is mentioned.
For testing you can add a block any protocol, source, destionation rule to the top of the OpenVPN tab. Consider to flush the states on that interface before trying to access something.