Adding a backup Internet WAN on my OPNsense Router

Adding a backup Internet WAN on my OPNsense RouterJul 23, 2026AKA "Spectrum has gone down two weeks in a row and I'm sick of it".I've been borrowing a portable 5G gateway from my Dad for a few weeks, for testing... and two weeks in a row, I've used it as a backup Internet option, since my Spectrum Business cable Internet has gone down.And yes, I'd get AT&T Fiber if I had the option, sadly they don