diff --git a/openstack/cloud/openstackcloud.py b/openstack/cloud/openstackcloud.py
index 5e0c68b54..518f3788c 100755
--- a/openstack/cloud/openstackcloud.py
+++ b/openstack/cloud/openstackcloud.py
@@ -6963,13 +6963,19 @@ class _OpenStackCloudMixin(_normalize.Normalizer):
                         "Requested network {net} could not be found.".format(
                             net=nic['net-name']))
                 net['uuid'] = nic_net['id']
+            for ip_key in ('v4-fixed-ip', 'v6-fixed-ip', 'fixed_ip'):
+                fixed_ip = nic.pop(ip_key, None)
+                if fixed_ip and net.get('fixed_ip'):
+                    raise exc.OpenStackCloudException(
+                        "Only one of v4-fixed-ip, v6-fixed-ip or fixed_ip"
+                        " may be given")
+                if fixed_ip:
+                    net['fixed_ip'] = fixed_ip
             # TODO(mordred) Add support for tag if server supports microversion
             # 2.32-2.36 or >= 2.42
-            for key in ('port', 'fixed_ip'):
+            for key in ('port', 'port-id'):
                 if key in nic:
-                    net[key] = nic.pop(key)
-            if 'port-id' in nic:
-                net['port'] = nic.pop('port-id')
+                    net['port'] = nic.pop(key)
             if nic:
                 raise exc.OpenStackCloudException(
                     "Additional unsupported keys given for server network"
diff --git a/openstack/tests/unit/cloud/test_create_server.py b/openstack/tests/unit/cloud/test_create_server.py
index 616d45eb3..af43c2d72 100644
--- a/openstack/tests/unit/cloud/test_create_server.py
+++ b/openstack/tests/unit/cloud/test_create_server.py
@@ -632,6 +632,152 @@ class TestCreateServer(base.TestCase):
             network='network-name', nics=[])
         self.assert_calls()
 
+    def test_create_server_network_fixed_ip(self):
+        """
+        Verify that if 'fixed_ip' is supplied in nics, we pass it to networks
+        appropriately.
+        """
+        network = {
+            'id': 'network-id',
+            'name': 'network-name'
+        }
+        fixed_ip = '10.0.0.1'
+        build_server = fakes.make_fake_server('1234', '', 'BUILD')
+        self.register_uris([
+            dict(method='POST',
+                 uri=self.get_mock_url(
+                     'compute', 'public', append=['servers']),
+                 json={'server': build_server},
+                 validate=dict(
+                     json={'server': {
+                         u'flavorRef': u'flavor-id',
+                         u'imageRef': u'image-id',
+                         u'max_count': 1,
+                         u'min_count': 1,
+                         u'networks': [{'fixed_ip': fixed_ip}],
+                         u'name': u'server-name'}})),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'compute', 'public', append=['servers', '1234']),
+                 json={'server': build_server}),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'network', 'public', append=['v2.0', 'networks.json']),
+                 json={'networks': [network]}),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'network', 'public', append=['v2.0', 'subnets.json']),
+                 json={'subnets': []}),
+        ])
+        self.cloud.create_server(
+            'server-name', dict(id='image-id'), dict(id='flavor-id'),
+            nics=[{'fixed_ip': fixed_ip}])
+        self.assert_calls()
+
+    def test_create_server_network_v4_fixed_ip(self):
+        """
+        Verify that if 'v4-fixed-ip' is supplied in nics, we pass it to
+        networks appropriately.
+        """
+        network = {
+            'id': 'network-id',
+            'name': 'network-name'
+        }
+        fixed_ip = '10.0.0.1'
+        build_server = fakes.make_fake_server('1234', '', 'BUILD')
+        self.register_uris([
+            dict(method='POST',
+                 uri=self.get_mock_url(
+                     'compute', 'public', append=['servers']),
+                 json={'server': build_server},
+                 validate=dict(
+                     json={'server': {
+                         u'flavorRef': u'flavor-id',
+                         u'imageRef': u'image-id',
+                         u'max_count': 1,
+                         u'min_count': 1,
+                         u'networks': [{'fixed_ip': fixed_ip}],
+                         u'name': u'server-name'}})),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'compute', 'public', append=['servers', '1234']),
+                 json={'server': build_server}),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'network', 'public', append=['v2.0', 'networks.json']),
+                 json={'networks': [network]}),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'network', 'public', append=['v2.0', 'subnets.json']),
+                 json={'subnets': []}),
+        ])
+        self.cloud.create_server(
+            'server-name', dict(id='image-id'), dict(id='flavor-id'),
+            nics=[{'fixed_ip': fixed_ip}])
+        self.assert_calls()
+
+    def test_create_server_network_v6_fixed_ip(self):
+        """
+        Verify that if 'v6-fixed-ip' is supplied in nics, we pass it to
+        networks appropriately.
+        """
+        network = {
+            'id': 'network-id',
+            'name': 'network-name'
+        }
+        # Note - it doesn't actually have to be a v6 address - it's just
+        # an alias.
+        fixed_ip = 'fe80::28da:5fff:fe57:13ed'
+        build_server = fakes.make_fake_server('1234', '', 'BUILD')
+        self.register_uris([
+            dict(method='POST',
+                 uri=self.get_mock_url(
+                     'compute', 'public', append=['servers']),
+                 json={'server': build_server},
+                 validate=dict(
+                     json={'server': {
+                         u'flavorRef': u'flavor-id',
+                         u'imageRef': u'image-id',
+                         u'max_count': 1,
+                         u'min_count': 1,
+                         u'networks': [{'fixed_ip': fixed_ip}],
+                         u'name': u'server-name'}})),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'compute', 'public', append=['servers', '1234']),
+                 json={'server': build_server}),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'network', 'public', append=['v2.0', 'networks.json']),
+                 json={'networks': [network]}),
+            dict(method='GET',
+                 uri=self.get_mock_url(
+                     'network', 'public', append=['v2.0', 'subnets.json']),
+                 json={'subnets': []}),
+        ])
+        self.cloud.create_server(
+            'server-name', dict(id='image-id'), dict(id='flavor-id'),
+            nics=[{'fixed_ip': fixed_ip}])
+        self.assert_calls()
+
+    def test_create_server_network_fixed_ip_conflicts(self):
+        """
+        Verify that if 'fixed_ip' and 'v4-fixed-ip' are both supplied in nics,
+        we throw an exception.
+        """
+        # Note - it doesn't actually have to be a v6 address - it's just
+        # an alias.
+        self.use_nothing()
+        fixed_ip = '10.0.0.1'
+        self.assertRaises(
+            exc.OpenStackCloudException, self.cloud.create_server,
+            'server-name', dict(id='image-id'), dict(id='flavor-id'),
+            nics=[{
+                'fixed_ip': fixed_ip,
+                'v4-fixed-ip': fixed_ip
+            }])
+        self.assert_calls()
+
     def test_create_server_get_flavor_image(self):
         self.use_glance()
         image_id = str(uuid.uuid4())
diff --git a/releasenotes/notes/v4-fixed-ip-325740fdae85ffa9.yaml b/releasenotes/notes/v4-fixed-ip-325740fdae85ffa9.yaml
new file mode 100644
index 000000000..99fe5b8d0
--- /dev/null
+++ b/releasenotes/notes/v4-fixed-ip-325740fdae85ffa9.yaml
@@ -0,0 +1,7 @@
+---
+fixes:
+  - |
+    Re-added support for `v4-fixed-ip` and `v6-fixed-ip` in the `nics`
+    parameter to `create_server`. These are aliaes for `fixed_ip` provided
+    by novaclient which shade used to use. The switch to REST didn't include
+    support for these aliases, resulting in a behavior regression.