I've had an ER-X as my router (connected to my ISP's fibre ONT) for a few years now. When it works, it's great, but it has this fun habit of dying without any outward indication of why; the link ...
I have a brand new ERX that came with EdgeOS 1.7.2. After using the wizard to set it up with 1 wan and 4 lan ports, I upgraded to 1.9.7 hotfix 4. Rebooted the router, and it works fine as a router.
Earlier in the year we were having regular dropouts with our HFC connection. Sometimes several times each day. After some direct help from a Vodafone employee and some experimentation I discovered ...