diff --git a/etc/tempest.conf.sample b/etc/tempest.conf.sample
index 9f2f924..c773e33 100644
--- a/etc/tempest.conf.sample
+++ b/etc/tempest.conf.sample
@@ -729,6 +729,11 @@
 # all which indicates every extension is enabled (list value)
 #api_extensions=all
 
+# Allow the execution of IPv6 subnet tests that use the
+# extended IPv6 attributes ipv6_ra_mode and ipv6_address_mode
+# (boolean value)
+#ipv6_subnet_attributes=false
+
 
 [object-storage]
 
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index cc768fd..087b87a 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -149,7 +149,8 @@
         return network
 
     @classmethod
-    def create_subnet(cls, network, gateway=None, cidr=None, mask_bits=None):
+    def create_subnet(cls, network, gateway=None, cidr=None, mask_bits=None,
+                      **kwargs):
         """Wrapper utility that returns a test subnet."""
         # The cidr and mask_bits depend on the ip version.
         if cls._ip_version == 4:
@@ -168,7 +169,8 @@
                     network_id=network['id'],
                     cidr=str(subnet_cidr),
                     ip_version=cls._ip_version,
-                    gateway_ip=gateway)
+                    gateway_ip=gateway,
+                    **kwargs)
                 break
             except exceptions.BadRequest as e:
                 is_overlapping_cidr = 'overlaps with another subnet' in str(e)
diff --git a/tempest/api/network/test_networks.py b/tempest/api/network/test_networks.py
index ac0fd11..78cb221 100644
--- a/tempest/api/network/test_networks.py
+++ b/tempest/api/network/test_networks.py
@@ -14,6 +14,7 @@
 #    under the License.
 
 import netaddr
+import testtools
 
 from tempest.api.network import base
 from tempest.common.utils import data_utils
@@ -433,6 +434,29 @@
         self.assertEqual('204', resp['status'])
         self.subnets.pop()
 
+    @testtools.skipUnless(CONF.network_feature_enabled.ipv6_subnet_attributes,
+                          "IPv6 extended attributes for subnets not "
+                          "available")
+    @test.attr(type='smoke')
+    def test_create_delete_subnet_with_v6_attributes(self):
+        name = data_utils.rand_name('network-')
+        resp, body = self.client.create_network(name=name)
+        self.assertEqual('201', resp['status'])
+        network = body['network']
+        net_id = network['id']
+        subnet = self.create_subnet(network,
+                                    gateway='fe80::1',
+                                    ipv6_ra_mode='slaac',
+                                    ipv6_address_mode='slaac')
+        # Verifies Subnet GW in IPv6
+        self.assertEqual(subnet['gateway_ip'], 'fe80::1')
+        self.assertEqual(subnet['ipv6_ra_mode'], 'slaac')
+        self.assertEqual(subnet['ipv6_address_mode'], 'slaac')
+        # Delete network and subnet
+        resp, body = self.client.delete_network(net_id)
+        self.assertEqual('204', resp['status'])
+        self.subnets.pop()
+
 
 class NetworksIpV6TestXML(NetworksIpV6TestJSON):
     _interface = 'xml'
diff --git a/tempest/config.py b/tempest/config.py
index 6d9fda6..7a0f4c4 100644
--- a/tempest/config.py
+++ b/tempest/config.py
@@ -432,6 +432,12 @@
                 default=['all'],
                 help='A list of enabled network extensions with a special '
                      'entry all which indicates every extension is enabled'),
+    cfg.BoolOpt('ipv6_subnet_attributes',
+                default=False,
+                help="Allow the execution of IPv6 subnet tests that use "
+                     "the extended IPv6 attributes ipv6_ra_mode "
+                     "and ipv6_address_mode"
+                )
 ]
 
 queuing_group = cfg.OptGroup(name='queuing',