@purpleidea I've seen fun variations of that. Once, years ago, I wound up beinged connected to someone else's line, which I initially didn't notice because they had DSL service too and my third-party DSL provider was happy to take my connection from the wrong phone number/line/etc. (That was educational about the difference between 'DSL signal' and 'a PPPoE DSL connection', although it might not work in all DSL environments.)