[dns-operations] Anyone from Google here?

Viktor Dukhovni ietf-dane at dukhovni.org
Fri Apr 17 06:14:43 UTC 2020

On Fri, Apr 17, 2020 at 03:52:14PM +1000, Mark Andrews wrote:

> % dig @ns1.google.com google.com type1001 
> ;; ->>HEADER<<- opcode: QUERY, status: NOTIMP, id: 40540

Well, it is somewhat similar to the behaviour of the load balancers for
mail.protection.outlook.com, which return NOTIMP for even more RRtypes,
e.g. TLSA:

    _25._tcp.nist-gov.mail.protection.outlook.com. IN A ? ; NXDomain
    _25._tcp.nist-gov.mail.protection.outlook.com. IN TLSA ? ; NotImp

> All this does is make it harder to deploy new DNS data types.  Is
> that Google’s intention?

I doubt that's the intention, but perhaps it points to a common origin
for the underlying DNS load-balancer platforms?  If so, with a bit of
luck software/firmware updates may be available to address both.

It is otherwise an interesting coincidence that both Google and
Microsoft ended up pretty much the same bug.


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