@JeremyCherfas The modern VCR!
It doesn’t help that many are stunted intentionally, so stuff you ought to be able to do, you can’t. I haven’t had an ISP-issued router that let me just treat it as a modem (“bridge mode”) since probably 2008. :\
Bridge mode made things dead easy: set to bridge, plug into “Internet” jack on your on router, and done. No worries about subnet disagreements between DHCP servers or anything like with cascaded routers (when a router is “downstream” of another router), which is what I’ve wound up with.
/@matigo @hazardwarning @variablepulserate