Synthesized CNAME from NXDOMAIN

[Mark Andrews]

In message <CAEKtLiSj_2J-Rtot_2GTiXN6hL4pbKjSWdw3YOgFL1DjfC2qeg at mail.gmail.com>, Casey Deccio writes:
> 
> On Thu, Oct 3, 2013 at 5:42 PM, Mark Andrews <marka at isc.org> wrote:
> 
> >
> > Use a DNAME record.  That works with DNSSEC.
> >
> >
> Thanks for the suggestion.  I would use DNAME, except the old namespace
> will still have names under it, and names are not allowed to exist below a
> DNAME.  In other words, we're not replacing the old namespace, we're just
> minimizing its scope and use.

Then I suggest that you just add CNAMEs whenever you remove other record.
Once a part of the namespace only have CNAME/DNAME below it replace it
with a DNAME.  You will converge on the earlier example.
 
> Casey
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org