Re: Arrogant architects
No matter what they had done, there would have been market resistance. The reality is that most suggestions to "extend" IPv4 don't take into account that the IPv4 address is a 32 bit integer in the header so you cannot easily just extend it and suggestions for adding a "feature flag" that lists an extended address in the header would only have slowed packet processing down for all time.
Once it was established that there was no easy way to extend IPv4, they set out to make sure the transition wouldn't need to happen again any time soon by extending the address space to something huge and went about fixing some of the known design flaws in IPv4.
At any rate, having worked for two ISPs, I can tell you most of the market resistance has been waiting for the IPv4 addressing to become a problem. "It's not a problem right now, we need to concentrate on more immediate issues" Never mind that IPv6 is not difficult to setup and co exists without trouble with IPv4. And naturally, now that we have hit IPv4 address exhaustion and the addresses are becoming expensive we are starting to see adoption According to Google, the number of IPv6 users world wide has been increasing while and US has hit 27% adoption.