Watching people try to teach John Nagle how to do networking is half the reason why I like reading the HN forums :-).

I'm not one to defer to authority too easily, but it's my experience that, when someone with enough experience says something that sounds out of this world, it's a good idea to think about it for a bit.

There are arguments for unique IP addresses for interfaces. I'm just amused at the addition of yet another layer of address indirection.

Certainly, I'm convinced that neither you, nor the fine folks at BSD were/are clueless about these things. I think it's important to know why these decisions were made, and what trade-offs were involved, so that I don't get dogmatic about them.

I had no idea. This kind of stuff is why I like HN. I have no idea who the real 'celebrities' are. It feels like most of the discussion is on a pretty even ground.