diff --git a/tools/process-templates.py b/tools/process-templates.py
index c820be4ee7..7a36d393d3 100755
--- a/tools/process-templates.py
+++ b/tools/process-templates.py
@@ -302,6 +302,9 @@ def clean_templates(base_path, role_data_path, network_data_path):
         external_resource_ports_path = os.path.join(
             'network', 'ports',
             'external_resource_%s.yaml' % network['name_lower'])
+        external_resource_ports_v6_path = os.path.join(
+            'network', 'ports',
+            'external_resource_%s_v6.yaml' % network['name_lower'])
         ports_from_pool_path = os.path.join(
             'network', 'ports', '%s_from_pool.yaml' % network['name_lower'])
         ports_v6_path = os.path.join(
@@ -315,6 +318,7 @@ def clean_templates(base_path, role_data_path, network_data_path):
         delete(network_from_pool_v6_path)
         delete(ports_path)
         delete(external_resource_ports_path)
+        delete(external_resource_ports_v6_path)
         delete(ports_from_pool_path)
         delete(ports_v6_path)
         delete(ports_from_pool_v6_path)