Last Call Review of draft-ietf-add-ddr-08
review-ietf-add-ddr-08-intdir-lc-zuniga-2022-07-12-00

I am an assigned INT directorate reviewer for <draft-ietf-add-ddr-08>. 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/.

From Section 1 Introduction, it is not obvious if the two mechanisms mentioned
in the section are alternative or complementary, and how they relate to the
DoT, DoQ and DoH requirements introduced in the same section.

Section 4 gets into details about DoT and DoQ using IP addresses - it would be
good to explain a little more about it in the Intro section.

In Section 5, the requirements seem to overlap with draft-ietf-add-svcb-dns. It
would be good to further clarify the relationship between the two
specifications.

Finally, since multiple solutions are presented, some recommendations about
when, how and why one mechanism should be used vs the other would be useful to
the reader.

Best,

Juan-Carlos