This document describes how IPv6 packets are transported over constrained Power Line Communication (PLC) networks. It is a clear and well-written document and its content is relevant for all operators that will have such networks under their administration. I have however one concern that I would suggest the OPS AD to clarify before approving this document. There is no mention in the document of the operational and manageability aspects. How will these networks be managed, monitored, troubleshooted?  Which existing OAM protocols and procedures apply and will extensions be needed? Are there / will there be any new new interface types ("ifType" values) required as per RFC 8892? Maybe other documents exist in the IEEE or ITU-T that document these aspects - if so it would be useful to reference them. If other documents are in planning in the IETF on this respect - please clarify.