@keepitsimple said in Configure OPT port for Gaming Console:
I enabled OPT port, with DHCP for IPv4 and everything else left blank.
In the interface setting you marked IPv4 Configuration type as DHCP? If so then you need to change it to Static IPv4 since there's no DHCP server on the OPT to issue the interface an IP. Then you'll need to go to Services -> DHCP Server -> OPT 1 and enable DHCP server for OPT 1 then also create a DHCP pool.
Alternatively, you can just create an ACL in UPnP to only allow your gaming console.
https://blog.gravitywall.net/2021/12/27/fixing-nat-type-strict-on-xbox-series-sx-with-pfsense/