diff --git a/neutron/agent/linux/interface.py b/neutron/agent/linux/interface.py
index 39d7a1f3e7c..4b18fb58ad2 100644
--- a/neutron/agent/linux/interface.py
+++ b/neutron/agent/linux/interface.py
@@ -267,9 +267,8 @@ class LinuxInterfaceDriver(object, metaclass=abc.ABCMeta):
              bridge=None, namespace=None, prefix=None, mtu=None, link_up=True):
         if not ip_lib.device_exists(device_name,
                                     namespace=namespace):
-            self._safe_plug_new(
-                network_id, port_id, device_name, mac_address, bridge,
-                namespace, prefix, mtu, link_up)
+            self.plug_new(network_id, port_id, device_name, mac_address,
+                          bridge, namespace, prefix, mtu, link_up)
         else:
             LOG.info("Device %s already exists", device_name)
             if mtu:
@@ -278,22 +277,6 @@ class LinuxInterfaceDriver(object, metaclass=abc.ABCMeta):
             else:
                 LOG.warning("No MTU configured for port %s", port_id)
 
-    def _safe_plug_new(self, network_id, port_id, device_name, mac_address,
-            bridge=None, namespace=None, prefix=None, mtu=None, link_up=True):
-        try:
-            self.plug_new(
-                network_id, port_id, device_name, mac_address, bridge,
-                namespace, prefix, mtu, link_up)
-        except TypeError:
-            LOG.warning("Interface driver's plug_new() method should now "
-                        "accept additional optional parameter 'link_up'. "
-                        "Usage of plug_new() method which takes from 5 to 9 "
-                        "positional arguments is now deprecated and will not "
-                        "be possible in W release.")
-            self.plug_new(
-                network_id, port_id, device_name, mac_address, bridge,
-                namespace, prefix, mtu)
-
     @abc.abstractmethod
     def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
         """Unplug the interface."""
diff --git a/neutron/tests/unit/agent/linux/test_interface.py b/neutron/tests/unit/agent/linux/test_interface.py
index ed8f3597e64..bd9492f73c7 100644
--- a/neutron/tests/unit/agent/linux/test_interface.py
+++ b/neutron/tests/unit/agent/linux/test_interface.py
@@ -61,17 +61,6 @@ class FakePort(object):
     network_id = network.id
 
 
-class FakeLegacyInterfaceDriver(interface.LinuxInterfaceDriver):
-
-    def plug_new(self, network_id, port_id, device_name, mac_address,
-                 bridge=None, namespace=None, prefix=None, mtu=None):
-        """This is legacy method which don't accepts link_up argument."""
-        pass
-
-    def unplug(self, device_name, bridge=None, namespace=None, prefix=None):
-        pass
-
-
 class TestBase(base.BaseTestCase):
     def setUp(self):
         super(TestBase, self).setUp()
@@ -685,20 +674,3 @@ class TestBridgeInterfaceDriver(TestBase):
 
         self.ip_dev.assert_has_calls([mock.call('tap0', namespace=None),
                                       mock.call().link.delete()])
-
-
-class TestLegacyDriver(TestBase):
-
-    def test_plug(self):
-        self.device_exists.return_value = False
-        with mock.patch('neutron.agent.linux.interface.LOG.warning') as log:
-            driver = FakeLegacyInterfaceDriver(self.conf)
-            try:
-                driver.plug(
-                    '01234567-1234-1234-99', 'port-1234', 'tap0',
-                    'aa:bb:cc:dd:ee:ff')
-            except TypeError:
-                self.fail("LinuxInterfaceDriver class can not call properly "
-                          "plug_new method from the legacy drivers that "
-                          "do not accept 'link_up' parameter.")
-            log.assert_called_once()
diff --git a/releasenotes/notes/Remove-deprecated-way-of-calling-interface-driver-plug_new-method-3377ce0b776df6b2.yaml b/releasenotes/notes/Remove-deprecated-way-of-calling-interface-driver-plug_new-method-3377ce0b776df6b2.yaml
new file mode 100644
index 00000000000..feea6801744
--- /dev/null
+++ b/releasenotes/notes/Remove-deprecated-way-of-calling-interface-driver-plug_new-method-3377ce0b776df6b2.yaml
@@ -0,0 +1,9 @@
+---
+other:
+  - |
+    Abstract method ``plug_new`` from the
+    neutron.agent.linux.interface.LinuxInterfaceDriver now has additional
+    positional argument ``link_up``. Usage of this method without ``link_up``
+    is now not possible.
+    Third-party drivers which inherit from this base class now have to update
+    the implementation of their ``plug_new`` method.