> trying to think technical problems that prevented deployment, when it was actually political ones I'd say it's more human nature. We can see the problem loo

> trying to think technical problems that prevented deployment, when it was actually political ones I'd say it's more human nature. We can see the problem looming in the horizon, we think we have some solution but implementing it will be painful now. However, the current solution isn't very painful yet, so it's better near-term to procrastinate. And so we postpone the change. If IPv4 had some flaws that seriously hurt back in the mid-90s, we'd surely be over on IPv6 or something else by now.