diff --git a/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py b/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py
index e94d03358fe..6829187aaea 100644
--- a/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py
+++ b/neutron/plugins/ml2/drivers/ovn/mech_driver/mech_driver.py
@@ -41,6 +41,7 @@ from ovsdbapp.backend.ovs_idl import idlutils
 from neutron._i18n import _
 from neutron.common.ovn import acl as ovn_acl
 from neutron.common.ovn import constants as ovn_const
+from neutron.common.ovn import extensions as ovn_extensions
 from neutron.common.ovn import utils as ovn_utils
 from neutron.common import utils as n_utils
 from neutron.conf.plugins.ml2.drivers.ovn import ovn_conf
@@ -170,6 +171,9 @@ class OVNMechanismDriver(api.MechanismDriver):
                 portbindings.CONNECTIVITY_L2,
         }
 
+    def supported_extensions(self, extensions):
+        return set(ovn_extensions.ML2_SUPPORTED_API_EXTENSIONS) & extensions
+
     def subscribe(self):
         registry.subscribe(self.pre_fork_initialize,
                            resources.PROCESS,