> But compared to ipv4 (where you can almost immediately trace from an IP you have in a log to device... Honestly, given that the vast majority of the sites th

> But compared to ipv4 (where you can almost immediately trace from an IP you have in a log to device... Honestly, given that the vast majority of the sites that use v6 "privacy addresses" are going to be end-users at their home, and that most of those folks are going to be either using web browsers, and/or already logged into the servers that are servicing their requests, there are so very, _very_ many powerful ways that folks can be tracked that have absolutely nothing to do with their IP address. "Privacy addresses" are just a nuisance. > Some devices actually rotate more often (ie, when connecting to different wifi points even if underlying network is the same, apple seems to generate another new IP). I'm not sure _exactly_ the setup you're talking about. If "connecting to different wifi points" means "disconnecting from one SSID and connecting to another SSID but still being on the same physical network", then I think that this is OSX randomizing your MAC address and/or OSX generating a new DUID when connecting to a different SSID.