diff --git a/Documentation/Filters/Named-Server-Filter.md b/Documentation/Filters/Named-Server-Filter.md
index 068182406..abfc0e00a 100644
--- a/Documentation/Filters/Named-Server-Filter.md
+++ b/Documentation/Filters/Named-Server-Filter.md
@@ -96,7 +96,13 @@ source=192.%.%.%
 source=192.168.%.%
 source=192.168.10.%
 ```
-Note that using source=% to match any IP is not allowed.
+Note that using `source=%` to match any IP is not allowed.
+
+Since MaxScale 2.3 it's also possible to specify multiple addresses separated
+by comma. Incoming client connections are subsequently checked against each.
+```
+source=192.168.21.3,192.168.10.%
+```
 
 ### `user`
 
diff --git a/Documentation/Release-Notes/MaxScale-2.3.0-Release-Notes.md b/Documentation/Release-Notes/MaxScale-2.3.0-Release-Notes.md
index 02105f632..d942a5fa7 100644
--- a/Documentation/Release-Notes/MaxScale-2.3.0-Release-Notes.md
+++ b/Documentation/Release-Notes/MaxScale-2.3.0-Release-Notes.md
@@ -201,6 +201,10 @@ allows queries to be automatically retried if their execution is interrupted.
 The [`causal_reads`](../Routers/ReadWriteSplit.md#causal_reads) parameter
 enables distributed consistent reads with MariaDB version 10.2 and newer.
 
+### Named Server Filter
+
+The `source` parameter can now contain a list of comma separated addresses.
+
 ### Interactive Mode for MaxCtrl
 
 MaxCtrl can now be started in an interactive mode similar to MaxAdmin. This