diff --git a/CHANGES b/CHANGES
index 7caed4d536..173cacd838 100644
--- a/CHANGES
+++ b/CHANGES
@@ -1,3 +1,6 @@
+5403.	[func]		Don't set udp recv/send buffer sizes, sockets will
+			use system defaults. [GL #1713]
+
 5402.	[bug]		Enable SO_REUSEADDR on all platforms, and either
 			SO_REUSEPORT_LB on FreeBSD, or SO_REUSEPORT on Linux.
 			[GL !3365]
diff --git a/doc/arm/notes-9.17.2.xml b/doc/arm/notes-9.17.2.xml
index 407855b84a..dcfc529c95 100644
--- a/doc/arm/notes-9.17.2.xml
+++ b/doc/arm/notes-9.17.2.xml
@@ -89,6 +89,12 @@
           [GL #1674]
         </para>
       </listitem>
+      <listitem>
+        <para>
+          BIND 9 no longer sets the recv and send buffer sizes for sockets, relying
+          on system defaults instead. [GL #1713]
+        </para>
+      </listitem>
     </itemizedlist>
   </section>