diff --git a/Known-Issues.md b/Known-Issues.md
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+++ b/Known-Issues.md
@@ -1,4 +1,12 @@
 This page documents known issues, and solutions. 
 
 ## RT-AC68U
-This router supports armv7 architecture, however the `linux_armv7` binary [will not run](https://github.com/golang/go/issues/32760) on it. The solution is simple: use the `linux_armv5` binary instead. 
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+This router supports armv7 architecture, however the `linux_armv7` binary [will not run](https://github.com/golang/go/issues/32760) on it. The solution is simple: use the `linux_armv5` binary instead.
+
+## UDM Pro
+
+The DHCP "DNS Server" settings must be set to "Auto", so LAN clients DNS will be set correctly.
+
+Having static DNS (see image below) setting with external DNS servers cause clients requests not routed to `ctrld` listeners.
+
+![image](https://github.com/Control-D-Inc/ctrld/assets/4304764/d34ae2dc-4a86-4751-85ed-74dfda7080c5)
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