I have Optimum. Works well enough for me (since I call them up every year or more often to get them to lower their price). Still, I have the choice of Frontier Fiber and am considering it, but I have a technical question. I need a public IP address so that I can reach my router (for VPN). Will the Frontier Fiber modem (ONT?) provide me with a public IP address? Dynamic IP is fine and expected as long it is reachable from the Internet. I am concerned about getting Frontier Fiber and finding myself behind a double NAT which would complicate things for me.