I am an assigned INT directorate reviewer for draft-ietf-6lo-use-cases. These comments were written primarily for the benefit of the Internet Area Directors. Document editors and shepherd(s) should treat these comments just like they would treat comments from any other IETF contributors and resolve them along with any other Last Call comments that have been received. For more details on the INT Directorate, see https://datatracker.ietf.org/group/intdir/about/ . The document describes the applicability of IPv6 over 6lo networks and provides some examples of practical deployments. The document is well written and provides a very good set of references for the interested reader to continue digging. I think given the nature of the document, there are not issues for INT-AREA, as those aspects that would be indeed very relevant there are mostly tackled on the many other documents that are referenced. I find the document quite informative though and I enjoyed and learned quite a lot reading it. Based on my review, if I was on the IESG I would ballot this document as YES. The following are minor issues (typos, misspelling, minor text improvements) with the document: - I would personally prefer not to have explicit references to WGs, as the document probably will live longer that the 6lo WG (though there are examples on the IETF for the other way around ;) ) and I think the document should not assume that the reader is familiar with IETF WGs. - "for the IEEE Std 802.15.4[IEEE802159].)" --> "for the IEEE Std 802.15.4 [IEEE802159].)"