Hi, all,




 




I have reviewed draft-ietf-cdni-metadata-18 as part of the Operational directorate's ongoing effort to review all IETF documents being processed by the IESG. These comments were written with the intent of improving
 the operational aspects of the IETF drafts. Comments that are not addressed in last call may be included in AD reviews during the IESG review.  Document editors and WG chairs should treat these comments just like any other last call comments.




 




This Standards Track document defines a base set of CDNI metadata and the protocol for exchanging that metadata. I think this document is ready for publication. Here are a few minor
 comments:




 




The example of footprint object has only The document has examples using IPv4. Because the other parts of this document does have IPv6 example, I think this is probably a mistake rather than not supporting IPv6 here on
 purpose (if it is on purpose, an explanation for reasons are necessary).




 




Normative reference to an Informational RFC: RFC 5861 and RFC 6707.




 




Best regards,




 




Sheng