I have gotten flack for giving ULA+NPTv6 as a possible solution to an IPv6 multi-homing issue because the RFC that describes it was 'only' "Experimental":

* https://datatracker.ietf.org/doc/html/rfc6296

When I pointed out that the NAT(44) RFC (1631/3022) was 'only' "Informational" I got radio silence:

* https://datatracker.ietf.org/doc/html/rfc1631

▲

ekr____ 17 hours ago | parent [-]

I have no opinion on ULA+NPTv6, other than Experimental doesn't mean you shouldn't use it. How else would people experiment. It does mean that the level of vetting by the IETF is potentially lower.

WRT IPv4 NAT, I'm not sure how much we can infer from the status. Many people at IETF were (and some still are) very anti-NAT, in part because they felt that IPv6 was the right solution. As a result, the IETF really avoided doing anything that looked like it was endorsing NAT, even though it's obviously just a fact of the Internet.

	▲	throw0101d 10 hours ago \| parent [-]
		My general point is that the category or track of an RFC may mean different things to different people (assuming they're even aware of them at all).