(A visit to some url, say google.com, with login cookie, and the link between ip and user is made again.)
Let's just be hippies and share NAT'd IPv4's. Unironically.
Edit: I've gone rogue and blocked IPv6 in DNSCloak. https://apps.apple.com/ca/app/dnscloak-secure-dns-client/id1...
(A visit to some url, say google.com, with login cookie, and the link between ip and user is made again.)