On Dec 4 2013, Joe Abley wrote:

[...snip...]
There was at least one study commissioned by ICANN on the prudence of
provisioning DNAME RRs in the root zone that concluded that there was
no obvious danger, but remember that any novel RRTypes in the root zone
are going to need implementation time in the systems and processes
involved in root zone management, and such changes have proven in the
past to be neither quick nor easy.

How would such DNAMEs interact with use of BIND's "root-delegation-only"
(or equivalents, if any, in other software)? Do we have any idea how
widespread use of that option is?

When "ipv4only.arpa" appeared as a delegation in October, I did wonder
why it wasn't just an A rrset in the "arpa" zone, until I thought of
that issue. Although maybe the reasoning was actually different.

--
Chris Thompson               University of Cambridge Computing Service,
Email: c...@ucs.cam.ac.uk    Roger Needham Building, 7 JJ Thomson Avenue,
Phone: +44 1223 334715       Cambridge CB3 0RB, United Kingdom.
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