On 04/09/2010 09:56 AM, Dave Israel wrote:
+Bonus Uncertainty: There is a lack of consensus on how IPv6 is to be deployed. For example, look at the ongoing debates on point to point network sizes and the /64 network boundary in general. There's also no tangible benefit to deploying IPv6 right now, and the tangible danger that your v6 deployment will just have to be redone because there's some flaw in the current v6 protocol or best practices that will be uncovered.
This lack of consensus seems to most be associated with people who haven't deployed. those of us who have in some cases a decade ago, don't wonder very much... You can deploy point-to-points as /112s or /64s. if you do anything that isn't aligned on a byte boundary the brains will leak out of the ears of your engineers. If you don't believe me go ahead and try it. any subnet that has more than 2 devices on it is a /64 do anything else and you'll shoot yourself or someone else in the foot and probably sooner rather than later.
+Bonus Doubt: Because we've been told that "IPv4 will be dead in 2 years" for the last 20 years, and that "IPv6 will be deployed and a way of life in 2 years" for the past 10, nobody really believes it anymore. There's been an ongoing chant of "wolf" for so long, many people won't believe it until things are much, much worse.
I bet you're really good at predicting the stock market as well. you can be right and still go bankrupt. It is posisble to mistake postive but nearly random outcomes for skill or insight. I don't have to be right about needing an ipv6 deployment plan or even believe that ipv6 is deployable in it's present form (I happen to believe that, buts it's beside the point), because I need a business continuity plan for what happens around ipv4 exhaustion, I may have more than one, but I have a fiduciary duty to my company to not fly this particular plane into avoidable terrain.
-Dave