Blog Post

Networking Blog
3 MIN READ

Introducing DNR support for Windows Insiders

AditiPatange's avatar
AditiPatange
Icon for Microsoft rankMicrosoft
Oct 25, 2023
A huge thank you to Alex Jercaianu, Justin Sapp, Kosi Nwabueze, and Milan Justel for implementing this feature!   Discovery of Network-designated Resolvers (DNR) is an upcoming IETF standard to d...
Updated Oct 26, 2023
Version 3.0
DNR
DoH
DoT
EncryptedDNS
jonaspietsch_de's avatar
jonaspietsch_de
Copper Contributor
Nov 18, 2024

Hi AditiPatange 

thank you for your nice blog post.

Can you please assist with my issue? I cannt get DNR to work.

I have the folowing setup:

  1. Windows 11 with the build 27695
  2. The registry flag for DNR activated as stated in this blog post.
  3. Set up the DHCP server with ISC-KEA v2.6
  4. Configured the scope option 162 with the following value "2, dns.google." (ADN-only mode)

I can now see in a packet log on the windows machine, that the scope option 162 is requested by windows and also answered by the DHCP server. But somehow windows is not switching to DNS over TLS or DNS over HTTPS.

I used the Google DNS server to not have any issues regarding the certificate. But I also tried with a local server and trusted certificate, Windows is not switching to encrypted DNS.

The logs in Microsoft-Windows-DHCP-Client/Operational and Microsoft-Windows-DNS-Client/Operational could not help.

Do you have any troubleshooting tips?

Thank you.