Thank you @RobM, that actually answered my question.. If you would form it as an answer, I would accept it..

I'm trying to update the question but it fails.. moments...

@kce I actually saw it seconds before you post, and deleted my comment accordingly.. You are right, but still, it is answerable, and it is a problem of understanding.

So asking anything about history of a protocol or anything not used is off topic on serverfault?? I think that should be clear in the FAQ.. Per the FAQ, my question is On topic; it is about network routing, the history of the most popular network routing protocol..

No, if it was Not constructive I would say something too.. I'm trying to get there...

Actually I think both IPv5 and IPv9 are valid questions here.. It is on the topic of the site obviously, it deals with the history of a well known network protocol.. Your argument stands if you were talking about not constructive, although I can argue more there.. But isin't that on topic anyway??