The update to RFC6724 adjusts the IP address selection precedence to favor IPv6 global unicast and unique local addresses above IPv4 addresses. It demotes the 6to4 tunneling option reflecting the decreased reliance on IPv4 deployments. It also makes rule 5.5 mandatory which prefers addresses in a prefix advertised by next-hop routers.

I found no significant issues. I had a couple of questions related to word choice. The authors or other reviewers may determine whether they are significant enough to make a change.

Introduction:
	- 4th paragraph: Wording seems awkward:
		S/a label that differs to general ULA prefixes/a label that differs from general ULA prefixes/
		OR
		S/a label that differs to general ULA prefixes/a label that defers to general ULA prefixes/

Section 5.3:
	- S/how the learnt known-local/how the learned known-local/
		I couldn't find "learnt" in a US English dictionary.