diff --git a/README.rst b/README.rst
index f44c503..c1c6a10 100644
--- a/README.rst
+++ b/README.rst
@@ -104,7 +104,7 @@
     $ tempest run
 
    from the Tempest workspace directory. Or you can use the ``--workspace``
-   argument to run in the workspace you created regarless of your current
+   argument to run in the workspace you created regardless of your current
    working directory. For example::
 
     $ tempest run --workspace cloud-01
diff --git a/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml b/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml
index c21751b..1b8cda2 100644
--- a/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml
+++ b/releasenotes/notes/add-tempest-lib-remote-client-adbeb3f42a36910b.yaml
@@ -1,10 +1,11 @@
 ---
 features:
-  - Add remote_client under tempest.lib.
+  - |
+    Add remote_client under tempest.lib.
     This remote_client under tempest.lib is defined as stable
     interface, and now this module provides the following
     essential methods.
 
-      * exec_command
-      * validate_authentication
-      * ping_host
+    - exec_command
+    - validate_authentication
+    - ping_host
diff --git a/tempest/api/compute/admin/test_volume_swap.py b/tempest/api/compute/admin/test_volume_swap.py
index 45472df..984f1a9 100644
--- a/tempest/api/compute/admin/test_volume_swap.py
+++ b/tempest/api/compute/admin/test_volume_swap.py
@@ -30,6 +30,9 @@
     5. Swap volume from "volume1" to "volume2" as admin.
     6. Check the swap volume is successful and "volume2"
        is attached to "instance1" and "volume1" is in available state.
+    7. Swap volume from "volume2" to "volume1" as admin.
+    8. Check the swap volume is successful and "volume1"
+       is attached to "instance1" and "volume2" is in available state.
     """
 
     @classmethod
@@ -58,13 +61,21 @@
                                                 volume1['id'], 'available')
         waiters.wait_for_volume_resource_status(self.volumes_client,
                                                 volume2['id'], 'in-use')
-        self.addCleanup(self.servers_client.detach_volume,
-                        server['id'], volume2['id'])
         # Verify "volume2" is attached to the server
         vol_attachments = self.servers_client.list_volume_attachments(
             server['id'])['volumeAttachments']
         self.assertEqual(1, len(vol_attachments))
         self.assertIn(volume2['id'], vol_attachments[0]['volumeId'])
 
-        # TODO(mriedem): Test swapping back from volume2 to volume1 after
-        # nova bug 1490236 is fixed.
+        # Swap volume from "volume2" to "volume1"
+        self.admin_servers_client.update_attached_volume(
+            server['id'], volume2['id'], volumeId=volume1['id'])
+        waiters.wait_for_volume_resource_status(self.volumes_client,
+                                                volume2['id'], 'available')
+        waiters.wait_for_volume_resource_status(self.volumes_client,
+                                                volume1['id'], 'in-use')
+        # Verify "volume1" is attached to the server
+        vol_attachments = self.servers_client.list_volume_attachments(
+            server['id'])['volumeAttachments']
+        self.assertEqual(1, len(vol_attachments))
+        self.assertIn(volume1['id'], vol_attachments[0]['volumeId'])
diff --git a/tempest/api/compute/servers/test_multiple_create.py b/tempest/api/compute/servers/test_multiple_create.py
index 7e55b12..87265ec 100644
--- a/tempest/api/compute/servers/test_multiple_create.py
+++ b/tempest/api/compute/servers/test_multiple_create.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 from tempest.api.compute import base
+from tempest.common import compute
 from tempest.lib import decorators
 
 
@@ -21,13 +22,16 @@
 
     @decorators.idempotent_id('61e03386-89c3-449c-9bb1-a06f423fd9d1')
     def test_multiple_create(self):
-        body = self.create_test_server(wait_until='ACTIVE',
-                                       min_count=1,
-                                       max_count=2)
+        body, servers = compute.create_test_server(self.os,
+                                                   wait_until='ACTIVE',
+                                                   min_count=2)
+        for server in servers:
+            self.addCleanup(self.servers_client.delete_server, server['id'])
         # NOTE(maurosr): do status response check and also make sure that
         # reservation_id is not in the response body when the request send
         # contains return_reservation_id=False
         self.assertNotIn('reservation_id', body)
+        self.assertEqual(2, len(servers))
 
     @decorators.idempotent_id('864777fb-2f1e-44e3-b5b9-3eb6fa84f2f7')
     def test_multiple_create_with_reservation_return(self):
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index fbfcafc..742fe59 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -239,6 +239,36 @@
              'enable_snat': False})
         self._verify_gateway_port(router['id'])
 
+    @decorators.idempotent_id('cbe42f84-04c2-11e7-8adb-fa163e4fa634')
+    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
+    def test_create_router_set_gateway_with_fixed_ip(self):
+        # Don't know public_network_address, so at first create address
+        # from public_network and delete
+        port = self.admin_ports_client.create_port(
+            network_id=CONF.network.public_network_id)['port']
+        self.admin_ports_client.delete_port(port_id=port['id'])
+
+        fixed_ip = {
+            'subnet_id': port['fixed_ips'][0]['subnet_id'],
+            'ip_address': port['fixed_ips'][0]['ip_address']
+        }
+        external_gateway_info = {
+            'network_id': CONF.network.public_network_id,
+            'external_fixed_ips': [fixed_ip]
+        }
+
+        # Create a router and set gateway to fixed_ip
+        router = self.admin_routers_client.create_router(
+            external_gateway_info=external_gateway_info)['router']
+        self.addCleanup(self.admin_routers_client.delete_router,
+                        router_id=router['id'])
+        # Examine router's gateway is equal to fixed_ip
+        self.assertEqual(router['external_gateway_info'][
+                         'external_fixed_ips'][0]['ip_address'],
+                         fixed_ip['ip_address'])
+
     @decorators.idempotent_id('ad81b7ee-4f81-407b-a19c-17e623f763e8')
     @testtools.skipUnless(CONF.network.public_network_id,
                           'The public_network_id option must be specified.')
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index e945ac9..8d680e9 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+import testtools
 
 from tempest.api.network import base_routers as base
 from tempest import config
@@ -82,6 +83,31 @@
                           subnet02['id'])
 
     @test.attr(type=['negative'])
+    @decorators.idempotent_id('7101cc02-058a-11e7-93e1-fa163e4fa634')
+    @test.requires_ext(extension='ext-gw-mode', service='network')
+    @testtools.skipUnless(CONF.network.public_network_id,
+                          'The public_network_id option must be specified.')
+    def test_router_set_gateway_used_ip_returns_409(self):
+        # At first create a address from public_network_id
+        port = self.admin_ports_client.create_port(
+            network_id=CONF.network.public_network_id)['port']
+        self.addCleanup(self.admin_ports_client.delete_port,
+                        port_id=port['id'])
+        # Add used ip and subnet_id in external_fixed_ips
+        fixed_ip = {
+            'subnet_id': port['fixed_ips'][0]['subnet_id'],
+            'ip_address': port['fixed_ips'][0]['ip_address']
+        }
+        external_gateway_info = {
+            'network_id': CONF.network.public_network_id,
+            'external_fixed_ips': [fixed_ip]
+        }
+        # Create a router and set gateway to used ip
+        self.assertRaises(lib_exc.Conflict,
+                          self.admin_routers_client.create_router,
+                          external_gateway_info=external_gateway_info)
+
+    @test.attr(type=['negative'])
     @decorators.idempotent_id('04df80f9-224d-47f5-837a-bf23e33d1c20')
     def test_router_remove_interface_in_use_returns_409(self):
         self.routers_client.add_router_interface(self.router['id'],
diff --git a/tempest/lib/api_schema/response/compute/v2_26/servers.py b/tempest/lib/api_schema/response/compute/v2_26/servers.py
index d873402..b03bdf6 100644
--- a/tempest/lib/api_schema/response/compute/v2_26/servers.py
+++ b/tempest/lib/api_schema/response/compute/v2_26/servers.py
@@ -52,12 +52,7 @@
     'response_body': {
         'type': 'object',
         'properties': {
-            'tags': {
-                'type': 'array',
-                'items': {
-                    'type': 'string'
-                }
-            }
+            'tags': tag_items,
         },
         'additionalProperties': False,
         'required': ['tags']
diff --git a/tempest/lib/common/cred_client.py b/tempest/lib/common/cred_client.py
index ea06011..a81f53c 100644
--- a/tempest/lib/common/cred_client.py
+++ b/tempest/lib/common/cred_client.py
@@ -59,7 +59,8 @@
     def _check_role_exists(self, role_name):
         try:
             roles = self._list_roles()
-            role = next(r for r in roles if r['name'] == role_name)
+            lc_role_name = role_name.lower()
+            role = next(r for r in roles if r['name'].lower() == lc_role_name)
         except StopIteration:
             return None
         return role
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index 5bbc039..15a0a70 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -104,7 +104,6 @@
 
     def _setup_network_and_servers(self, **kwargs):
         boot_with_port = kwargs.pop('boot_with_port', False)
-        self.security_group = self._create_security_group()
         self.network, self.subnet, self.router = self.create_networks(**kwargs)
         self.check_networks()
 
@@ -152,7 +151,9 @@
     def _create_server(self, network, port_id=None):
         keypair = self.create_keypair()
         self.keypairs[keypair['name']] = keypair
-        security_groups = [{'name': self.security_group['name']}]
+        security_groups = [
+            {'name': self._create_security_group()['name']}
+        ]
         network = {'uuid': network['id']}
         if port_id is not None:
             network['port'] = port_id
diff --git a/tempest/scenario/test_network_v6.py b/tempest/scenario/test_network_v6.py
index d9b93fe..cfd83d0 100644
--- a/tempest/scenario/test_network_v6.py
+++ b/tempest/scenario/test_network_v6.py
@@ -72,11 +72,11 @@
         if dualnet - create IPv6 subnets on a different network
         :return: list of created networks
         """
-        self.network = self._create_network()
+        network = self._create_network()
         if dualnet:
-            self.network_v6 = self._create_network()
+            network_v6 = self._create_network()
 
-        sub4 = self._create_subnet(network=self.network,
+        sub4 = self._create_subnet(network=network,
                                    namestart='sub4',
                                    ip_version=4)
 
@@ -90,7 +90,7 @@
 
         self.subnets_v6 = []
         for _ in range(n_subnets6):
-            net6 = self.network_v6 if dualnet else self.network
+            net6 = network_v6 if dualnet else network
             sub6 = self._create_subnet(network=net6,
                                        namestart='sub6',
                                        ip_version=6,
@@ -105,7 +105,7 @@
                             router['id'], subnet_id=sub6['id'])
 
             self.subnets_v6.append(sub6)
-        return [self.network, self.network_v6] if dualnet else [self.network]
+        return [network, network_v6] if dualnet else [network]
 
     @staticmethod
     def define_server_ips(srv):
@@ -121,8 +121,6 @@
     def prepare_server(self, networks=None):
         username = CONF.validation.image_ssh_user
 
-        networks = networks or [self.network]
-
         srv = self.create_server(
             key_name=self.keypair['name'],
             security_groups=[{'name': self.sec_grp['name']}],
@@ -134,7 +132,7 @@
             username=username)
         return ssh, ips, srv["id"]
 
-    def turn_nic6_on(self, ssh, sid):
+    def turn_nic6_on(self, ssh, sid, network_id):
         """Turns the IPv6 vNIC on
 
         Required because guest images usually set only the first vNIC on boot.
@@ -142,16 +140,18 @@
 
         @param ssh: RemoteClient ssh instance to server
         @param sid: server uuid
+        @param network_id: the network id the NIC is connected to
         """
         ports = [
             p["mac_address"] for p in
             self.admin_manager.ports_client.list_ports(
-                device_id=sid, network_id=self.network_v6['id'])['ports']
+                device_id=sid, network_id=network_id)['ports']
         ]
+
         self.assertEqual(1, len(ports),
                          message=("Multiple IPv6 ports found on network %s. "
                                   "ports: %s")
-                         % (self.network_v6, ports))
+                         % (network_id, ports))
         mac6 = ports[0]
         ssh.set_nic_state(ssh.get_nic_name_by_mac(mac6))
 
@@ -168,8 +168,9 @@
 
         # Turn on 2nd NIC for Cirros when dualnet
         if dualnet:
-            self.turn_nic6_on(sshv4_1, sid1)
-            self.turn_nic6_on(sshv4_2, sid2)
+            network, network_v6 = net_list
+            self.turn_nic6_on(sshv4_1, sid1, network_v6['id'])
+            self.turn_nic6_on(sshv4_2, sid2, network_v6['id'])
 
         # get addresses assigned to vNIC as reported by 'ip address' utility
         ips_from_ip_1 = sshv4_1.exec_command("ip address")