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Is moving to IPv6 worth it?
(lemmy.world)
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this post was submitted on 13 Jul 2023
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IPv6 has NPTv6, which allows you to translate from one prefix into another.
Useful if you've got dual WAN, and can't advertise your own addressing via the ISP. You can use NPTv6 to translate between your local prefix and the public prefixes. But NPTv6 is completely stateless. It's literally a 1:1 mapping between the prefixes.
IPv6 has both NAT66 and NPTv6. (Note that NPTv6 was once called NAT66 too, but I am referring to the "stateful, one-to-many" NAT66 here. Yeah, it's confusing.) NAT66 is more like the traditional stateful NAT that all of us know and understand.