diff --git a/environments/services/ironic.yaml b/environments/services/ironic.yaml
index a7f98cc482..ace29f8379 100644
--- a/environments/services/ironic.yaml
+++ b/environments/services/ironic.yaml
@@ -1,3 +1,6 @@
+parameter_defaults:
+  NeutronMechanismDrivers: ['openvswitch', 'baremetal']
+
 resource_registry:
   OS::TripleO::Services::IronicApi: ../../deployment/ironic/ironic-api-container-puppet.yaml
   OS::TripleO::Services::IronicConductor: ../../deployment/ironic/ironic-conductor-container-puppet.yaml
diff --git a/releasenotes/notes/enable-ml2-baremetal-with-ironic-service-8c2909023e3896a5.yaml b/releasenotes/notes/enable-ml2-baremetal-with-ironic-service-8c2909023e3896a5.yaml
new file mode 100644
index 0000000000..e8230f90bf
--- /dev/null
+++ b/releasenotes/notes/enable-ml2-baremetal-with-ironic-service-8c2909023e3896a5.yaml
@@ -0,0 +1,6 @@
+features:
+  - |
+    The ``baremetal`` ML2 mechanism driver is enabled in the Networking Service
+    (neutron) in the overcloud by default when the Baremtal Service (ironic) is
+    enabled. Previously the user would have to enable this driver manually by
+    overriding the ``NeutronMechanismDrivers`` parameter.