I'm not affiliated with Iroh or even using it, but... "IP works just fine". What!? This is _not_ a solved problem

I think that was the question: What is the problem it is solving ?

You’ve asserted “THIS is not a solved problem,” which suggests everyone is clear on what THIS means. I think that is not a good assumption.

But what is the actual problem?

Establishing fast/secure P2P connections between computers.