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Like TUBA.

TUBA was TCP, UDP, and the Internet protocols on top of the OSI network stack (CLNP). It's about as from from IPv4 as you could imagine.

https://tools.ietf.org/html/rfc1347

For anyone curious why we didn't just widen addresses, this misunderstanding is why ;)

The real reason is probably closer to Fred Brooks' "second system effect". A new generation IP was regarded by some over-zealous engineers as an opportunity of putting in all sorts of new requirements.

https://en.wikipedia.org/wiki/Second-system_effect

They also didn't know the story of the King's Toaster. (Since it refers to 80386's and Unix version 8, it must have already been written at the time.)

http://www.ee.ryerson.ca:8080/~elf/hack/ktoast.html

A real engineer would use no microcontrollers, and leverage the physical properties of the materials at hand to automatically lower and raise the toast. https://youtu.be/1OfxlSG6q5Y

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