I've replied about protocol compatibility in the other thread. Here, I'd just say: Yes, simplifying things is a laudable goal -- but so is keeping things compa

I've replied about protocol compatibility in the other thread. Here, I'd just say: Yes, simplifying things is a laudable goal -- but so is keeping things compatible. You need to choose a right tradeoff here, if you want your system to take less than 30 years to deploy. As a very concrete example: there is no reason that having 128-bit addresses should means your usual node now has half a dozen of them, per interface. It was someone's personal idea, which would normally be completely ignored, but this time it was merged into larger proposal that promised something people wanted.