[AusNOG] IPv6 DNS Providers in Australia

[Mark Andrews]

In message <98518DB27649AF4EAFB2E355F71E60508B7100F9 at ISRV-EXCH-1.conexim.local>
, Jonathan Thorpe writes:
> Hi Mark,
> 
> Very interesting - admittedly, the first I've heard of it. Are you aware of=
> any applications that rely on this?

Wrong question.  A better question would be what protocols didn't
use a new type because DNS control panels didn't support it.  SPF[1],
DKIM come to mind.

It's a enabling technology.  If a protocol developer can be assured
that people can add and retrieve records without having to upgrade
everything to support the new type it make choosing a new type more
attractive solution.

[1] TXT was using initially and by the time a type was allocated it was
effectively too late.

> I don't think DNS operators go out of their way to provide a constraints to=
>  a set of RR types as rejection of the standard, but rather (in our case an=
> yway) to provide a sane list of types that users can readily select. It hel=
> ps in validating inputs (not just the type, but also the context of the dat=
> a entered into the name and value fields) and avoids support calls.
> 
> If applications start taking advantage of RFC3597, it will force a rethink =
> of how things are validated, but without having any demand for it, it's dif=
> ficult to justify reworking management systems to support it.
> 
> Kind Regards,
> Jonathan
> 
-- 
Mark Andrews, ISC
1 Seymour St., Dundas Valley, NSW 2117, Australia
PHONE: +61 2 9871 4742                 INTERNET: marka at isc.org