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kytazo | 7 months ago

My impression would be the opposite. IPv6s get constantly rotated by most ISPs.

MACs are always randomized, even when connecting to the same network. At least as far as modern devices go.

Am I wrong?

discuss

vel0city|7 months ago

> IPv6s get constantly rotated by most ISPs

I've had the same prefix for five years now.

And yeah, sure, my device cycles through ephemeral IPv6 addresses often, but always within the same prefix.

Group IPs somewhere between /64s and /56 and you'll essentially get a household identity, at least for a few days to a few years.

kstrauser|7 months ago

Yep. The addresses in an IPv6 /56 or so are about the same as an IPv4 address as far as identifying a single location.

aorloff|7 months ago

IPv6 isn't the boogeyman for tracking in general, because so much still relies on IPv4

Last I heard, the default on Android was to randomize MAC address across networks but keep them static for each network.

homebrewer|7 months ago

It's actually well documented. What you're describing is the default (mostly), but it's more complicated than that.

Proper randomization can be enabled through the developer settings.