@vurpo @DJGummikuh IPv6 privacy changes the client IPv6 address every couple 24-ish hours on most OSs; it's a lot of effort to do better (such as a fresh IPv6 source address per IPv6 destination which would be perhaps the ideal). The 24 hour behavior makes all the IPv6 activity from that client very trackable. An IPv4 NAPT does a better job at obscuring if connections are from one client or multiple clients.