alt Hacker NewsNo, it very much does. If you want to join two network segments such that on one side all devices are on 10.1.X.X and the other all devices are 10.2.X.X, you'd use a mapping between 10.1.a.b and 10.2.a.b
See https://en.wikipedia.org/wiki/Network_address_translation#Me...
The general context here is about NATting to the public internet at large, not between particular segments. And the parent of my comment was talking specifically about NAPT, which is different from the non-port-based NAT that you're talking about.