686
Basically the extent of my IPv6 knowledge
(lemmy.world)
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I think you'll find some ISPs will be reluctant to let go of CGNAT - they're doing quite nicely by charging extra for 'commercial' services where it's not in the way.
Fortunately, many of us know about cloudflare tunnelling and other services, so NAT really isn't a problem to self hosters and even SMEs any more.