diff --git a/tcp_tests/helpers/ext.py b/tcp_tests/helpers/ext.py
index 518f483..3d11d6e 100644
--- a/tcp_tests/helpers/ext.py
+++ b/tcp_tests/helpers/ext.py
@@ -26,6 +26,7 @@
 UNDERLAY_NODE_ROLES = enum(
     'salt_master',
     'salt_minion',
+    'k8s_virtlet',
 )
 
 NETWORK_TYPE = enum(