Just a couple of places where the text could be made clearer: In the Abstract is this text: This document changes the recommended default IID generation scheme for cases where SLAAC is used to generate a stable IPv6 address. It recommends using the mechanism specified in RFC7217 in such cases, and recommends against embedding stable link-layer addresses in IPv6 Interface Identifiers. However, it would be useful for readers who aren't deeply familiar with the subject to provide a brief description of "the mechanism specified in RFC7217". I suggest It recommends using semantically opaque IIDs generated by the mechanism specified in RFC7217 in such cases, and recommends against embedding stable link-layer addresses in IPv6 Interface Identifiers. Similarly, the introduction contains As a result of the aforementioned issues, this document changes the recommended default IID generation scheme for generating stable IPv6 addresses with SLAAC to that specified in [RFC7217], and recommends against embedding stable link-layer addresses in IPv6 Interface Identifiers, such that the aforementioned issues are mitigated. which would be more informative as As a result of the aforementioned issues, in order to use semantically opaque IIDs, this document changes the recommended default IID generation scheme for generating stable IPv6 addresses with SLAAC to that specified in [RFC7217], and recommends against embedding stable link-layer addresses in IPv6 Interface Identifiers, such that the aforementioned issues are mitigated. Dale