So the short answer is you can, but you need to setup your Fios router to be a “bridge” instead of a router. Basically, turning your fios router into a “dumb modem”(not technically a modem, but bear with me), and having your replacement router do all the smarts (routing, DHCP, firewall, etc.). There are a few guides…

So the short answer is you can, but you need to setup your Fios router to be a “bridge” instead of a router. …