Hello

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

Please note that I previously reviewed version 20 of this draft and at that
time stated that the document was "Ready"

I am therefore only reviewing the differences between version 20 and current
version (22)

There are are clear and direct references to various DNS RFC's and this
draft is not in any conflict with the wider DNS space.

All in all I think this is a very well written document, although quite 
lengthy and makes lots of references to the appropriate RFC's it is well
understandable and didn't take me too long to get to grips with the context.

All but one of my previous editorial comments still remain except for my notes
on security around domain/service squatting, this particular aspect I believe
has been dealt with excellently with the additional text in 6.1 and I agree
with the authors statements here. As previously noted the other items were more
editorial comments rather than substantive. 

The additional sections 8.3 through 8.7 add much better clarity to the specific
considerations around authoritative and recursive servers

Therefore I continue to consider this document as "Ready"

Many Thanks to the authors for this work.

Best Regards

Anthony Somerset
DNS Directorate