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Aloisius01/02/20261 replyview on HN

Pretty sure NAT was standardized before IPv6.

NAT is RFC 1631.

IPv6 is RFC 1883.

Admitted, that was very basic NAT.


Replies

sgjohnson01/02/2026

RFC 1631 is a memo, not a standard.

Actually, my bad. NAT was NEVER standardized. Not only NAT was never standardized, it’s never even been on standards track. RFC 3022 is also just “Informational”

Plus, RFC 1918 doesn’t even mention NAT

So yes, NAT is a bug in history that has no right to exist. The people who invented it clearly never stopped to think on whether they should, so here we are 30 years later.

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