Do53 (DNS over port 53)
Issue IPv4 and IPv6 Do53 (DNS over port 53) resolvers to use on older physical devices.
What is Do53
Do53 (DNS over port 53), formerly called Legacy DNS, is a plain, unencrypted DNS resolver on UDP port 53, and it's just an IP pair. If you're deploying Control D on a device that does not support Secure DNS protocols, you have to enable this feature. Once you do, you will be issued with 2 pairs of Do53 resolvers: 2x IPv4 and 2x IPv6.
Example Devices
Here is a short list of operating systems and device types that require Do53 resolvers
- Windows 10
- Most routers
- Android TV boxes
- Smart TVs
How to Use
Simply edit an Endpoint and toggle Do53 (DNS over port 53) ON. Then view your resolver configuration and expand the Do53 section to see your Do53 IPs.

LimitationDo53 resolvers require the source IP of the client to be known to Control D. See the next section to learn more on how that works, and how it can be automated. For troubleshooting, see this page.
Updated about 5 hours ago
