Adding a backup Internet WAN on my OPNsense Router
… OPNsense and dual WAN My plan was to plug the 5G gateway into 'ETH2' the third Ethernet port on my OPNsense box; ETH0 went to my LAN, ETH1 was for the Cable modem, and ETH2 and ETH3 are available—all are 2.5 Gbps ports . …