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

[Andrew Sullivan]

On Wed, May 14, 2014 at 08:22:25AM +0100, Jim Reid wrote:
> 
> A delegation in TLD1 might point at a name in TLD2. So when the reference count for ns.foo.tld2 drops to zero, the registry deletes it from the DNS even though there's an NS record with RDATA for ns.foo.tld2 in TLD1.
> 

Yes.  What I suggested was necessary but I agree not sufficient.  The
really short version, I suppose, is "don't list as NS records anything
with which you don't have a close relationship".  Which seems like a
good idea anyway.

A

-- 
Andrew Sullivan
ajs at anvilwalrusden.com