diff --git a/environments/neutron-ml2-ansible.yaml b/environments/neutron-ml2-ansible.yaml
index ff732b0ff6..66e04b9e1a 100644
--- a/environments/neutron-ml2-ansible.yaml
+++ b/environments/neutron-ml2-ansible.yaml
@@ -3,6 +3,7 @@ resource_registry:
   OS::TripleO::Services::NeutronCorePlugin: ../puppet/services/neutron-plugin-ml2-ansible.yaml
 
 parameter_defaults:
+  IronicDefaultNetworkInterface: neutron
   NeutronMechanismDrivers: openvswitch,ansible
   NeutronTypeDrivers: local,vxlan,vlan,flat
   NeutronNetworkType: vlan
diff --git a/environments/services/neutron-ml2-ansible.yaml b/environments/services/neutron-ml2-ansible.yaml
index 59ff827cda..e40f047893 100644
--- a/environments/services/neutron-ml2-ansible.yaml
+++ b/environments/services/neutron-ml2-ansible.yaml
@@ -2,6 +2,7 @@
 resource_registry:
   OS::TripleO::Services::NeutronCorePlugin: OS::TripleO::Services::NeutronCorePluginML2Ansible
 parameter_defaults:
+  IronicDefaultNetworkInterface: neutron
   NeutronMechanismDrivers: openvswitch,ansible
   NeutronTypeDrivers: local,vxlan,vlan,flat
   NeutronNetworkType: vlan