Re: What transition?
"My suggestion. IPv6 people should recognize that they screwed up. Cancel the "transition" Come up with something serious and effective to tame IoT problem (which they didn't cause, but truly must not enable). Then design a new protocol compatible with both IPv4 and IPv6. And give a lot of thought to ease of implementation this time."
Please explain how to extend a fixed 32 bit header field without slowing down packet processing or introducing incompatibilities.