diff --git a/intro-mdp/netconf/delete_loopback.py b/intro-mdp/netconf/delete_loopback.py
index 53481876..e2bcbad5 100644
--- a/intro-mdp/netconf/delete_loopback.py
+++ b/intro-mdp/netconf/delete_loopback.py
@@ -49,7 +49,7 @@
 
 # Create an XML configuration template for ietf-interfaces
 netconf_interface_template = """
-<config>
+<config xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
     <interfaces xmlns="urn:ietf:params:xml:ns:yang:ietf-interfaces">
         <interface operation="delete">
         	<name>{name}</name>