diff --git a/nova/tests/unit/virt/libvirt/test_vif.py b/nova/tests/unit/virt/libvirt/test_vif.py
index 3e68f08685..f13bf16ac2 100644
--- a/nova/tests/unit/virt/libvirt/test_vif.py
+++ b/nova/tests/unit/virt/libvirt/test_vif.py
@@ -737,7 +737,7 @@ class LibvirtVifTestCase(test.NoDBTestCase):
     @mock.patch.object(host.Host, "has_min_version", return_value=False)
     def test_virtio_vhost_queue_sizes_nover(self, has_min_version):
         _, _, conf = self._test_virtio_config_queue_sizes()
-        self.assertIsNone(conf.vhost_rx_queue_size)
+        self.assertEqual(512, conf.vhost_rx_queue_size)
         self.assertIsNone(conf.vhost_tx_queue_size)
 
     @mock.patch.object(host.Host, "has_min_version", return_value=True)
@@ -753,7 +753,7 @@ class LibvirtVifTestCase(test.NoDBTestCase):
         hostimpl, v, conf = self._test_virtio_config_queue_sizes()
         v._set_config_VIFVHostUser(self.instance, self.os_vif_vhostuser,
                                    conf, hostimpl)
-        self.assertIsNone(conf.vhost_rx_queue_size)
+        self.assertEqual(512, conf.vhost_rx_queue_size)
         self.assertIsNone(conf.vhost_tx_queue_size)
 
     def test_multiple_nics(self):
@@ -1178,23 +1178,6 @@ class LibvirtVifTestCase(test.NoDBTestCase):
         vlan_want = self.vif_hw_veb["details"]["vlan"]
         self.assertEqual(int(vlan), vlan_want)
 
-    @mock.patch.object(pci_utils, 'get_ifname_by_pci_address',
-                       return_value='eth1')
-    @mock.patch.object(host.Host, "has_min_version", return_value=False)
-    def test_hw_veb_driver_macvtap_pre_vlan_support(self, ver_mock,
-                                                    mock_get_ifname):
-        d = vif.LibvirtGenericVIFDriver()
-        xml = self._get_instance_xml(
-            d, self.vif_hw_veb_macvtap,
-            has_min_libvirt_version=ver_mock.return_value)
-        node = self._get_node(xml)
-        self.assertEqual(node.get("type"), "direct")
-        self._assertTypeEquals(node, "direct", "source",
-                               "dev", "eth1")
-        self._assertTypeEquals(node, "direct", "source",
-                               "mode", "passthrough")
-        self._assertMacEquals(node, self.vif_hw_veb_macvtap)
-
     def test_driver_macvtap_vlan(self):
         d = vif.LibvirtGenericVIFDriver()
         xml = self._get_instance_xml(d, self.vif_macvtap_vlan)
diff --git a/nova/virt/libvirt/vif.py b/nova/virt/libvirt/vif.py
index ddc27f6092..305e603045 100644
--- a/nova/virt/libvirt/vif.py
+++ b/nova/virt/libvirt/vif.py
@@ -55,9 +55,6 @@ CONF = nova.conf.CONF
 MIN_LIBVIRT_INTERFACE_MTU = (3, 3, 0)
 MIN_QEMU_INTERFACE_MTU = (2, 9, 0)
 
-# virtio-net.rx_queue_size support
-MIN_LIBVIRT_RX_QUEUE_SIZE = (2, 3, 0)
-MIN_QEMU_RX_QUEUE_SIZE = (2, 7, 0)
 # virtio-net.tx_queue_size support
 MIN_LIBVIRT_TX_QUEUE_SIZE = (3, 7, 0)
 MIN_QEMU_TX_QUEUE_SIZE = (2, 10, 0)
@@ -447,15 +444,6 @@ class LibvirtGenericVIFDriver(object):
         # configure vhostuser interface meaning that the logs can be
         # duplicated. In future we want to rewrite get_base_config.
         rx, tx = CONF.libvirt.rx_queue_size, CONF.libvirt.tx_queue_size
-        if rx and not host.has_min_version(
-                MIN_LIBVIRT_RX_QUEUE_SIZE, MIN_QEMU_RX_QUEUE_SIZE):
-            LOG.warning('Setting RX queue size requires libvirt %s and QEMU '
-                        '%s version or greater.',
-                        libvirt_utils.version_to_string(
-                            MIN_LIBVIRT_RX_QUEUE_SIZE),
-                        libvirt_utils.version_to_string(
-                            MIN_QEMU_RX_QUEUE_SIZE))
-            rx = None
         if tx and not host.has_min_version(
                 MIN_LIBVIRT_TX_QUEUE_SIZE, MIN_QEMU_TX_QUEUE_SIZE):
             LOG.warning('Setting TX queue size requires libvirt %s and QEMU '