diff --git a/tempest/api/network/test_allowed_address_pair.py b/tempest/api/network/test_allowed_address_pair.py
index a471bd6..3075047 100644
--- a/tempest/api/network/test_allowed_address_pair.py
+++ b/tempest/api/network/test_allowed_address_pair.py
@@ -13,7 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import netaddr
 import six
 
 from tempest.api.network import base
@@ -41,8 +40,6 @@
         api_extensions
     """
 
-    _project_network_cidr = CONF.network.project_network_cidr
-
     @classmethod
     def skip_checks(cls):
         super(AllowedAddressPairTestJSON, cls).skip_checks()
@@ -105,8 +102,7 @@
     @decorators.idempotent_id('4d6d178f-34f6-4bff-a01c-0a2f8fe909e4')
     def test_update_port_with_cidr_address_pair(self):
         # Update allowed address pair with cidr
-        cidr = str(netaddr.IPNetwork(self._project_network_cidr))
-        self._update_port_with_address(cidr)
+        self._update_port_with_address(str(self.cidr))
 
     @decorators.idempotent_id('b3f20091-6cd5-472b-8487-3516137df933')
     def test_update_port_with_multiple_ip_mac_address_pair(self):
@@ -135,4 +131,3 @@
 
 class AllowedAddressPairIpV6TestJSON(AllowedAddressPairTestJSON):
     _ip_version = 6
-    _project_network_cidr = CONF.network.project_network_v6_cidr
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index ac315c4..99ffaa8 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -168,7 +168,7 @@
     def test_update_delete_extra_route(self):
         # Create different cidr for each subnet to avoid cidr duplicate
         # The cidr starts from project_cidr
-        next_cidr = netaddr.IPNetwork(self.cidr)
+        next_cidr = self.cidr
         # Prepare to build several routes
         test_routes = []
         routes_num = 4
@@ -244,7 +244,7 @@
         network02 = self.create_network(
             network_name=data_utils.rand_name('router-network02-'))
         subnet01 = self.create_subnet(network01)
-        sub02_cidr = netaddr.IPNetwork(self.cidr).next()
+        sub02_cidr = self.cidr.next()
         subnet02 = self.create_subnet(network02, cidr=sub02_cidr)
         router = self._create_router()
         interface01 = self._add_router_interface_with_subnet_id(router['id'],
diff --git a/tempest/api/network/test_routers_negative.py b/tempest/api/network/test_routers_negative.py
index 27bda3a..c9ce55c 100644
--- a/tempest/api/network/test_routers_negative.py
+++ b/tempest/api/network/test_routers_negative.py
@@ -13,8 +13,6 @@
 #    License for the specific language governing permissions and limitations
 #    under the License.
 
-import netaddr
-
 from tempest.api.network import base
 from tempest.common import utils
 from tempest import config
@@ -54,7 +52,7 @@
     @decorators.idempotent_id('11836a18-0b15-4327-a50b-f0d9dc66bddd')
     def test_router_add_gateway_net_not_external_returns_400(self):
         alt_network = self.create_network()
-        sub_cidr = netaddr.IPNetwork(self.cidr).next()
+        sub_cidr = self.cidr.next()
         self.create_subnet(alt_network, cidr=sub_cidr)
         self.assertRaises(lib_exc.BadRequest,
                           self.routers_client.update_router,