Reviewer: Sheng Jiang Review result: Has Nits Summary: This draft is almost ready for publication as a standard track RFC. Major issues: Minor issues: “the specification of a DHCPv6 option that could be used to discover unicast PREFIX64s in environments where multicast is not enabled. Such side effect conflicts with the recommendation documented in Section 6 of [RFC7051].” It is unclear how the Section 6 of RFC7051 relevant with the content above. It would be necessary to quote particular content of RFC7051 and give necessary analysis. Nits: “the Pv4 multicast address is inserted in the last 32 bits of the IPv4-embedded IPv6 multicast address.” Pv4//IPv4