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At home, my external IPv4 address was the same for extended periods of time even though I never paid for a static IP. You could have figured the traffic was co

At home, my external IPv4 address was the same for extended periods of time even though I never paid for a static IP. You could have figured the traffic was coming from the same location. The one external IP to many internal devices relationship does help with privacy. But once you enable those IPv6 privacy extensions, I have so many devices bouncing between IPs I’m not sure how you’d even know how many devices I have, let alone which device is which.

rao-v 6mo ago
My experience is that this is largely true only of the biggest ISPs in the US and Europe that were around in the 90s and have IPv4 in plenty. In other countries or even with other ISPs I see fairly frequent turnover. Agree it’s not the biggest deal but it is a pity and something the protocol stack around IPv6 should support (daily/weekly randomizing of prefix unless someone needs the stability). The vast majority of modern devices and usecases get no additional value from being stably addressable from the internet.