[dns-operations] Weirdness with glue for old (gone) DNS servers

[Mark Andrews]

In message <20140514143830.GG3146 at mx1.yitter.info>, Andrew Sullivan writes:
> On Wed, May 14, 2014 at 09:20:33AM +1000, Mark Andrews wrote:
> > 
> > Allowing a registration without NS records would fix this and other
> > problems like defensive registrations.
> 
> This has nothing to do with "allowing registration without NS
> records".  All the registries in question do in fact permit that.

Then why does't the registry remove all the records below a delegation
and any records that refer to them from the published zone when a
delegation is removed?  Rinse, lather, repeat for any delegations
that now no longer exist in the published zone.  The zone will be
re-instated or the NS records will be updated to refer to nameservers
in a different zone.

What is currently being done leaves a zone that "works" some of the
time for some servers.  Once a recursive server learns that the
name servers don't exist (any dual stack recursive server unless
there is both A and AAAA glue) then the zone fully breaks for that
server.

Mark

> A
> 
> -- 
> Andrew Sullivan
> ajs at anvilwalrusden.com
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-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org