diff --git a/overcloud-resource-registry-puppet.j2.yaml b/overcloud-resource-registry-puppet.j2.yaml
index 36726f4d3b..3b7bd51569 100644
--- a/overcloud-resource-registry-puppet.j2.yaml
+++ b/overcloud-resource-registry-puppet.j2.yaml
@@ -405,7 +405,7 @@ parameter_defaults:
     RedisNetwork: {{ _service_nets.get('internal_api', 'ctlplane') }}
     # Guest VMs use GaneshaNetwork and connot reach ctlplane network,
     # so default to external when storage_nfs is not available.
-    GaneshaNetwork: {{ _service_nets.get('storage_nfs', 'external') }}
+    GaneshaNetwork: {{ _service_nets.get('storage_nfs', _service_nets.get('external', 'ctlplane')) }}
     MysqlNetwork: {{ _service_nets.get('internal_api', 'ctlplane') }}
     SnmpdNetwork: ctlplane
     CephClusterNetwork: {{ _service_nets.get('storage_mgmt', 'ctlplane') }}