diff --git a/CHANGES b/CHANGES
index 039f9572db..7900cffd5a 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,9 @@
+5647.	[func]		The interfacemgr has been refactored to use fewer
+			clientmgr objects, which in turn use fewer memory
+			contexts and tasks.  This should result in less
+			fragmented memory and better startup performance.
+			[GL #2433]
+
 5646.	[bug]		The default TCP timeout for rndc has been increased
 			to 60 seconds. This was its original value, but it
 			had been inadvertently lowered to 10. [GL #2643]
diff --git a/doc/notes/notes-current.rst b/doc/notes/notes-current.rst
index 8911e6ebf7..bc1832f38e 100644
--- a/doc/notes/notes-current.rst
+++ b/doc/notes/notes-current.rst
@@ -41,7 +41,9 @@ Removed Features
 Feature Changes
 ~~~~~~~~~~~~~~~
 
-- None.
+- The interface handling code has been refactored to use fewer resources,
+  which should lead to less memory fragmentation and better startup
+  performance.  :gl:`#2433`
 
 Bug Fixes
 ~~~~~~~~~