RE: Misconceptions, was: IPv6 RA vs DHCPv6 - The chosen one?

["Vitkovsky, Adam" <avitkovsky () emea att com>]

> ... host systems should participate in IGP

> We tried that.

> It didn't scale well.

> The Internet today is very different than the Internet in 1981.

-did you? I thought CLNS with plethora of ip addresses compared to ipv4 was buried before it could be widely deployed, 
I was not around back than but would like to know why ES-IS did not scale well when integrated IS-IS is still used 
primarily for great scalability