It feels dirty to agree with an ISP on something. But even the worst corporations are on the right side of something from time to time I suppose.
It feels dirty to agree with an ISP on something. But even the worst corporations are on the right side of something from time to time I suppose.
I don’t know why you’re being downvoted for this. Even with CGNAT and related technologies, each modem still has a unique MAC address at the cable/DOCSIS level (even without loading Ethernet on top).
Where you could be wrong is buildings with large networks, say an apartment building with wired Ethernet to all the units but all being routed through the same WAN(s), but even still I’d hope that the network is managed in a way that it’s not hard to tell which unit is which IP internally. Unrelated but I’d also pray that each unit is on its own VLAN for security.
There are some apartment buildings with shared Internet connections that are just open and public; It’s crappy but cheap if someone can’t afford individual connection