diff --git a/neutron/services/ovn_l3/plugin.py b/neutron/services/ovn_l3/plugin.py
index 5023b8466e2..439fc328b22 100644
--- a/neutron/services/ovn_l3/plugin.py
+++ b/neutron/services/ovn_l3/plugin.py
@@ -73,6 +73,7 @@ class OVNL3RouterPlugin(service_base.ServicePluginBase,
     # once available.
     _supported_extension_aliases = (
         extensions.ML2_SUPPORTED_API_EXTENSIONS_OVN_L3)
+    __filter_validation_support = True
 
     @resource_registry.tracked_resources(router=l3_models.Router,
                                          floatingip=l3_models.FloatingIP)