Almost every single ISP I've worked with will let you put modem routers into "bridge" mode where it bridges the modem side to Ethernet and there's your mostly d

Almost every single ISP I've worked with will let you put modem routers into "bridge" mode where it bridges the modem side to Ethernet and there's your mostly dumb modem pushing a public IP to whatever you plug in to it. Cable companies get sneaky sneaky and keep some wifi crap on for their cell phone plans though.