IPv6 Is Hard - Hackdot

Re:IPv6 Is Hard by ninkendo on Monday February 17, 2025 @10:03PM (#43085662)

I think I’d mostly agree with you if only one layer of NAT is in play, but in reality we have CGNAT and it makes it supremely difficult to host services without a very cooperative ISP (laughable.) And there are more internet subscribers in the world than there are IP’s for them, so CGNAT is required for at least some unfortunate part of the population.

In reality we just really do need more IP’s. 32-bit addresses with 16 bits of ports isn’t enough.

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Re:IPv6 Is Hard by otabdeveloper4 on Tuesday February 18, 2025 @12:28AM (#43086369)

> makes it supremely difficult to host services without a very cooperative ISP

Sadly, that's a feature, not a bug.

Two layers of NAT sucks, but I guess it could have been avoided if a designed (instead of ad-hoc) solution to the problem was devised.

> And there are more internet subscribers in the world than there are IP’s for them

Is this really true, did somebody actually run the business math? "Internet subscriber" roughly corresponds to "household", not to "person".

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