Hi,

I have been selected as the DNS Directorate reviewer for this draft. The
DNS Directorate seeks to review all DNS or DNS-related drafts as
they pass through IETF last call and IESG review, and sometimes on special
request. The purpose of the review is to provide assistance to the ADs.
For more information about the DNS Directorate, please see
https://wiki.ietf.org/en/group/dnsdir

The draft is well written with a clear problem statement and a corresponding 
solution. 

There was a fair bit of discussion about the draft on the mailing list, as 
far as I can see all comments where either addressed in new revisions or 
discussed on the mailing list/during IETF meetings. 

I found no major or minor issues and think the draft is in a good
shape and can be progressed.

Best Regards

Nic