Yes, and v7 of the protocol is documented here: https://tools.ietf.org/html/rfc8216
> This document is not an Internet Standards Track specification; it is published for informational purposes.
IETF standard should be free as far as I know. So the fact that it's not is already suspicious.
Knowing Apple, they probably patented it to the brink. So they released it royalty free? And when exactly?
Note the word 'and'. That link wasn't to explain that it's free.
Also "is not an IETF standard" is a pretty low bar for suspicion!
Yes, and v7 of the protocol is documented here: https://tools.ietf.org/html/rfc8216