RE: A common problem with SLAAC in "renumbering" scenarios

["STARK, BARBARA H" <[e-mail]>]

> However, RFC7084 is Informational and not Standard. I think this should
> make it into Standard. I've seen many CPE vendors saying "we found
> relevant standard documents and implemented whatever was a MUST and
> shipped the product."

RFC7084 has no business being labeled an "Internet Standard", and its ability to impact CE router vendor development decisions is completely unrelated to how it is labeled.

It has no business being an "Internet Standard" because CE router requirements are derived/designed based on access architecture. CE router requirements do not, cannot, and will not ever drive access architecture. Whenever access architecture changes, CE router requirements change. Some of the changes that we saw from RFC6204 to RFC7084 were because ISPs decided they wanted to do different things in their access networks than what they originally thought (DS-Lite, 6rd, and some other items). So the requirements had to adjust. Now we have ISPs not agreeing on "IPv6aas" architecture. So the CE router is being asked to do all of them. What if 5G/wireline convergence becomes a reality? CE router requirements will change. Trying to standardize something that is outside IETF's control is unrealistic.

CE router vendors (and ISPs) really don't care whether something is labeled as "Standard" or "Informational". If it's well-defined and useful, that's all that's needed. L2TP is "Standards Track". PPPoE is "Informational". Which one do ISPs use in the access network, and which is implemented in CE routers? PPPoE. Why? It was a good tool for what was needed, and the RFC is easy to read and implement. L2TP was not the right tool.

Are there any major CE router vendors who haven't tried to implement all the "MUST" requirements of RFC7084? Not that I'm aware of. Some may not have done it right, but that's not the same as not trying.

I'm opposed to any attempt to turn CE router requirements into a "Standard". It's unrealistic and the status would have no impact on whether it's implemented.
Barbara