[44net] Spectrum Internet and IPIP

Hello to those on the list. Spectrum (formerly Charter) laid new fiber in my neighborhood and is offering a pretty enticing deal, especially considering I'm on a vdsl based service now. My current ISP has a router with a "pass-through" DMZ mode, which I use to get protocol 4 to a Ubiquiti router that runs ampr-ripd. Is there anyone on the list that is using a relatively new service from Spectrum and is able to pass protocol 4 for amprnet? Thanks and 73, Lee K5DAT