[dns-operations] Software that refuses an answer by QTYPE if it comes over plain UDP?

Kumar Ashutosh Kumar.Ashutosh at microsoft.com
Tue Mar 15 05:46:33 UTC 2016

Hi Doug
The answer is "YES"
Please check out Windows DNS Server Policies { https://technet.microsoft.com/en-us/library/mt169379.aspx }

You can create DNS policies to control how a DNS Server handles queries based on different parameters { or a combination of the parameters }.

One of these parameters is QTYPE -Type of record being queried 
A sample use case is here : https://blogs.technet.microsoft.com/networking/2015/05/18/applying-filters-on-dns-queries-using-windows-dns-server-policies/
(Check the section on 'Block a type of query' )


-----Original Message-----
From: dns-operations [mailto:dns-operations-bounces at dns-oarc.net] On Behalf Of Doug Barton
Sent: Tuesday, March 15, 2016 06:20
To: dns-operations at dns-oarc.net
Subject: [dns-operations] Software that refuses an answer by QTYPE if it comes over plain UDP?

Interesting question came up today, and while I think the answer is "No," I wanted to ask the smart kids. :)

Are there any name servers in play today that will only answer for a certain QTYPE if the query comes via either TCP, or UDP with cookies?

And a related question, is anyone thinking of developing some?

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