diff --git a/.zuul.yaml b/.zuul.yaml
index 02570a6..6dfcd1e 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -80,6 +80,7 @@
       Integration test of IPv6-only deployments. This job runs
       smoke and IPv6 relates tests only. Basic idea is to test
       whether OpenStack Services listen on IPv6 addrress or not.
+    timeout: 10800
     vars:
       tox_envlist: ipv6-only
 
diff --git a/tempest/api/compute/images/test_images.py b/tempest/api/compute/images/test_images.py
index 7cf26fb..eef2781 100644
--- a/tempest/api/compute/images/test_images.py
+++ b/tempest/api/compute/images/test_images.py
@@ -12,12 +12,14 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
+import testtools
+
 from tempest.api.compute import base
 from tempest.common import waiters
 from tempest import config
 from tempest.lib.common.utils import data_utils
 from tempest.lib import decorators
-import testtools
+from tempest.lib import exceptions as lib_exceptions
 
 CONF = config.CONF
 
@@ -51,12 +53,23 @@
         # in task_state image_snapshot
         self.addCleanup(waiters.wait_for_server_status, self.servers_client,
                         server['id'], 'ACTIVE')
-        image = self.create_image_from_server(server['id'],
-                                              wait_until='SAVING')
-        self.client.delete_image(image['id'])
-        msg = ('The image with ID {image_id} failed to be deleted'
-               .format(image_id=image['id']))
-        self.assertTrue(self.client.is_resource_deleted(image['id']), msg)
+        snapshot_name = data_utils.rand_name('test-snap')
+        try:
+            image = self.create_image_from_server(server['id'],
+                                                  name=snapshot_name,
+                                                  wait_until='SAVING')
+            self.client.delete_image(image['id'])
+            msg = ('The image with ID {image_id} failed to be deleted'
+                   .format(image_id=image['id']))
+            self.assertTrue(self.client.is_resource_deleted(image['id']),
+                            msg)
+            self.assertEqual(snapshot_name, image['name'])
+        except lib_exceptions.TimeoutException as ex:
+            # If timeout is reached, we don't need to check state,
+            # since, it wouldn't be a 'SAVING' state atleast and apart from
+            # it, this testcase doesn't have scope for other state transition
+            # Hence, skip the test.
+            raise self.skipException("This test is skipped because " + str(ex))
 
     @decorators.idempotent_id('aaacd1d0-55a2-4ce8-818a-b5439df8adc9')
     def test_create_image_from_stopped_server(self):
diff --git a/tempest/tests/lib/services/image/v2/test_namespace_tags_client.py b/tempest/tests/lib/services/image/v2/test_namespace_tags_client.py
index 2faa5be..894e178 100644
--- a/tempest/tests/lib/services/image/v2/test_namespace_tags_client.py
+++ b/tempest/tests/lib/services/image/v2/test_namespace_tags_client.py
@@ -118,6 +118,14 @@
     def test_show_namespace_tag_with_bytes_body(self):
         self._test_show_namespace_tag_definition(bytes_body=True)
 
+    def test_delete_namespace_tag_definition(self):
+        self.check_service_client_function(
+            self.client.delete_namespace_tag,
+            'tempest.lib.common.rest_client.RestClient.delete',
+            {}, status=204,
+            namespace="OS::Compute::Hypervisor",
+            tag_name="added-sample-tag")
+
     def test_delete_all_namespace_tags(self):
         self.check_service_client_function(
             self.client.delete_namespace_tags,