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People still working in IT, thoughts on IPv6?
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IPv6 has privacy addresses, though. Stuff on my network generates a new random address every day and uses that address for outgoing connections, so you can't really track individual devices inside my network.
You can just look at what addresses from that range have left the network in any given 24 hour window.
If AAAA is constantly reaching our to aussie.zone one day, and the next day AAAB is reaching out to that address you can pretty easily connect the dots.
But privacy addresses aren't incremented numbers. And it doesn't really matter if you can connect the dots, every /64 is the same as a single IPv4 address anyway. Especially for something like Lemmy where the browser will maintain a QUIC connection for ages if you want to track sessions. Besides, you have the session cookies to associate the other end even if they turn off WiFi and move to mobile data.