diff --git a/RNS/Interfaces/AutoInterface.py b/RNS/Interfaces/AutoInterface.py
index 3bd034b..0c86184 100644
--- a/RNS/Interfaces/AutoInterface.py
+++ b/RNS/Interfaces/AutoInterface.py
@@ -137,6 +137,8 @@ class AutoInterface(Interface):
             self.multicast_address_type = AutoInterface.MULTICAST_TEMPORARY_ADDRESS_TYPE
         elif str(multicast_address_type).lower() == "permanent":
             self.multicast_address_type = AutoInterface.MULTICAST_PERMANENT_ADDRESS_TYPE
+        else:
+            self.multicast_address_type = AutoInterface.MULTICAST_TEMPORARY_ADDRESS_TYPE
 
         if data_port == None:
             self.data_port = AutoInterface.DEFAULT_DATA_PORT
diff --git a/docs/source/interfaces.rst b/docs/source/interfaces.rst
index 38f52d4..e07f5bd 100644
--- a/docs/source/interfaces.rst
+++ b/docs/source/interfaces.rst
@@ -33,9 +33,20 @@ system, which should be enabled by default in almost all OSes.
 
 .. code::
 
-  # This example demonstrates a TCP server interface.
-  # It will listen for incoming connections on the
-  # specified IP address and port number.
+  # This example demonstrates a bare-minimum setup
+  # of an Auto Interface. It will allow communica-
+  # tion with all other reachable devices on all
+  # usable physical ethernet-based devices that
+  # are available on the system.
+
+  [[Default Interface]]
+    type = AutoInterface
+    interface_enabled = True
+
+  # This example demonstrates an more specifically
+  # configured Auto Interface, that only uses spe-
+  # cific physical interfaces, and has a number of
+  # other configuration options set.
   
   [[Default Interface]]
     type = AutoInterface