I think the document is close to ready but some more meat in still needed. Similar type of configurations have been used in other types of link with success. A couple of nits and questions. Line 157: "hosts/subscribers devices connected to the provider managed shared" is somewhat hard to parse. Does it mean to say "hosts'/subscribers' devices.."? RFC6106 reference need to be replaced with 8106. Line 259: Retransmit timer is the "AdvRetransTimer" or "restrans timer"? Be more specific here. Section 4 talks about unicast RAs. I think it would be good to mention also RFC6085, which allows unicasting an RA to a host on an Ethernet link, while RAs still use layer-3 multicast addressing. Similar goal, different approach. At least I would welcome text why RFC6085 is not endorsed or applicable? Section 5 gives some guidance regarding unsolicited RAs. However, it does not say anything about PIOs, although the context of the text seems to assume the presence of PIOs. I would mention those explicitly. I would also be more clear and state the unsolicited RAs are again unicasted. At least the current text seems to assume so. What happens when RSes get lost (all MAX_RTR_SOLICITATIONS)? How shared links with multiple first hop routers are supposed to work with the recommendations of this BCP. Current text seems to be only considering a single first hop router deployments.