> This is your tactic. You are trying to show that plan with 0.0% adoption rate is somehow better then plan with 0.3% adoption rate. Sure, 0.3% is pitiful adoption rate, but 0.0% is much worse no matter which way you are looking on it.
It's not my tactic. It's what happened. You know, a historical fact.
The common sense proposition (the one of backward compatibility) did not get accepted, ergo it never became "the plan" or "a plan" for IPv6 transition. This proposition did not get accepted by the same people that achieved the current 0.3% penetration, so the outcome of 0.0% counts against what they did too, which gives them a total score of 0.3%.
From my perspective, this is more like zero. My ping still doesn't work.
Your expose (or some of it) about various tribulations with OSes during the 64-transition is the stuff we should have been talking about in the last 10 years during the real IPv6 transition (i.e. stack upgrades). You know, real world problems that got solved, so that it would be really easy to upgrade today when the address crunch is upon us. As you've shown with the Windows example, it can be done so that it eventually becomes easy.
I love it when people keep avoiding simple, fundamental questions. There is always an elaborate, sophisticated, technical explanation, usually many pages long. In the end, the simple question asked at the beginning remains unanswered: why do people connected already cannot just stay connected?
Failure to answer that question leads to the current non-adoption of IPv6.