diff --git a/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py b/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py
index 3e7bc5c01f3..266e97f0b8c 100644
--- a/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py
+++ b/neutron/plugins/ml2/drivers/ovn/mech_driver/ovsdb/ovn_client.py
@@ -2093,7 +2093,8 @@ def set_gateway_mtu(self, context, prov_net, txn=None):
         for port in ports:
             lrp_name = utils.ovn_lrouter_port_name(port['id'])
             options = self._gen_router_port_options(port, prov_net)
-            commands.append(self._nb_idl.lrp_set_options(lrp_name, **options))
+            commands.append(self._nb_idl.update_lrouter_port(
+                lrp_name, if_exists=True, **options))
         self._transaction(commands, txn=txn)
 
     def update_network(self, context, network, original_network=None):
diff --git a/neutron/tests/unit/fake_resources.py b/neutron/tests/unit/fake_resources.py
index 003db6abb9c..bca73eeac00 100644
--- a/neutron/tests/unit/fake_resources.py
+++ b/neutron/tests/unit/fake_resources.py
@@ -62,7 +62,6 @@ def __init__(self, **kwargs):
         self.get_acls_for_lswitches = mock.Mock()
         self.create_lrouter = mock.Mock()
         self.lrp_del = mock.Mock()
-        self.lrp_set_options = mock.Mock()
         self.update_lrouter = mock.Mock()
         self.delete_lrouter = mock.Mock()
         self.add_lrouter_port = mock.Mock()
diff --git a/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py b/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py
index b0c77ecd4d2..4c61c946c2c 100644
--- a/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py
+++ b/neutron/tests/unit/plugins/ml2/drivers/ovn/mech_driver/test_mech_driver.py
@@ -2446,8 +2446,8 @@ def _test_update_network_fragmentation(self, new_mtu, expected_opts, grps):
                 self.mech_driver.update_network_postcommit(fake_ctx)
 
                 lrp_name = ovn_utils.ovn_lrouter_port_name(port['port']['id'])
-                self.nb_ovn.lrp_set_options.assert_called_once_with(
-                    lrp_name, **expected_opts)
+                self.nb_ovn.update_lrouter_port.assert_called_once_with(
+                    lrp_name, if_exists=True, **expected_opts)
 
     def test_update_network_need_to_frag_enabled(self):
         ovn_conf.cfg.CONF.set_override('ovn_emit_need_to_frag', True,
diff --git a/neutron/tests/unit/services/ovn_l3/test_plugin.py b/neutron/tests/unit/services/ovn_l3/test_plugin.py
index 53d39577d3d..fb686b36cbc 100644
--- a/neutron/tests/unit/services/ovn_l3/test_plugin.py
+++ b/neutron/tests/unit/services/ovn_l3/test_plugin.py
@@ -1678,7 +1678,7 @@ def test_add_router_interface_need_to_frag_enabled_then_remove(
         self.l3_inst._nb_ovn.add_lrouter_port.assert_called_once_with(
             **fake_router_port_assert)
         # Since if_exists = True it will safely return
-        self.l3_inst._nb_ovn.lrp_set_options(
+        self.l3_inst._nb_ovn.update_lrouter_port(
             name='lrp-router-port-id', if_exists=True,
             options=fake_router_port_assert)
         # If no if_exists is provided, it is defaulted to true, so this