diff --git a/tempest/api/network/admin/test_dhcp_agent_scheduler.py b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
index 8315c5d..4631ea9 100644
--- a/tempest/api/network/admin/test_dhcp_agent_scheduler.py
+++ b/tempest/api/network/admin/test_dhcp_agent_scheduler.py
@@ -63,7 +63,6 @@
     def test_add_remove_network_from_dhcp_agent(self):
         # The agent is now bound to the network, we can free the port
         self.ports_client.delete_port(self.port['id'])
-        self.ports.remove(self.port)
         agent = dict()
         agent['agent_type'] = None
         body = self.admin_agents_client.list_agents()
diff --git a/tempest/api/network/admin/test_routers.py b/tempest/api/network/admin/test_routers.py
index 8cdb41e..a7355f3 100644
--- a/tempest/api/network/admin/test_routers.py
+++ b/tempest/api/network/admin/test_routers.py
@@ -32,7 +32,6 @@
 
     def _cleanup_router(self, router):
         self.delete_router(router)
-        self.routers.remove(router)
 
     def _create_router(self, name=None, admin_state_up=False,
                        external_network_id=None, enable_snat=None):
diff --git a/tempest/api/network/base.py b/tempest/api/network/base.py
index 8670165..9032fdc 100644
--- a/tempest/api/network/base.py
+++ b/tempest/api/network/base.py
@@ -88,9 +88,6 @@
     @classmethod
     def resource_setup(cls):
         super(BaseNetworkTest, cls).resource_setup()
-        cls.subnets = []
-        cls.ports = []
-        cls.routers = []
         cls.ethertype = "IPv" + str(cls._ip_version)
         if cls._ip_version == 4:
             cls.cidr = netaddr.IPNetwork(CONF.network.project_network_cidr)
@@ -155,7 +152,6 @@
         cls.addClassResourceCleanup(test_utils.call_and_ignore_notfound_exc,
                                     cls.subnets_client.delete_subnet,
                                     subnet['id'])
-        cls.subnets.append(subnet)
         return subnet
 
     @classmethod
@@ -166,7 +162,6 @@
         port = body['port']
         cls.addClassResourceCleanup(test_utils.call_and_ignore_notfound_exc,
                                     cls.ports_client.delete_port, port['id'])
-        cls.ports.append(port)
         return port
 
     @classmethod
@@ -194,7 +189,6 @@
         router = body['router']
         cls.addClassResourceCleanup(test_utils.call_and_ignore_notfound_exc,
                                     cls.delete_router, router)
-        cls.routers.append(router)
         return router
 
     @classmethod
diff --git a/tempest/api/network/test_dhcp_ipv6.py b/tempest/api/network/test_dhcp_ipv6.py
index 9d6d700..0730d58 100644
--- a/tempest/api/network/test_dhcp_ipv6.py
+++ b/tempest/api/network/test_dhcp_ipv6.py
@@ -56,6 +56,9 @@
     def resource_setup(cls):
         super(NetworksTestDHCPv6, cls).resource_setup()
         cls.network = cls.create_network()
+        cls.ports = []
+        cls.subnets = []
+        cls.routers = []
 
     def _remove_from_list_by_index(self, things_list, elem):
         for index, i in enumerate(things_list):
@@ -90,8 +93,10 @@
 
     def _get_ips_from_subnet(self, **kwargs):
         subnet = self.create_subnet(self.network, **kwargs)
+        self.subnets.append(subnet)
         port_mac = data_utils.rand_mac_address()
         port = self.create_port(self.network, mac_address=port_mac)
+        self.ports.append(port)
         real_ip = next(iter(port['fixed_ips']), None)['ip_address']
         eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
             subnet['cidr'], port_mac))
@@ -182,16 +187,21 @@
                 kwargs_dhcp = {'ipv6_address_mode': 'dhcpv6-stateful'}
                 if order == "slaac_first":
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
+                    self.subnets.append(subnet_slaac)
                     subnet_dhcp = self.create_subnet(
                         self.network, **kwargs_dhcp)
+                    self.subnets.append(subnet_dhcp)
                 else:
                     subnet_dhcp = self.create_subnet(
                         self.network, **kwargs_dhcp)
+                    self.subnets.append(subnet_dhcp)
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
+                    self.subnets.append(subnet_slaac)
                 port_mac = data_utils.rand_mac_address()
                 eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
                     subnet_slaac['cidr'], port_mac))
                 port = self.create_port(self.network, mac_address=port_mac)
+                self.ports.append(port)
                 real_ips = dict([(k['subnet_id'], k['ip_address'])
                                  for k in port['fixed_ips']])
                 real_dhcp_ip, real_eui_ip = [real_ips[sub['id']]
@@ -228,16 +238,21 @@
                           'ipv6_address_mode': add_mode}
                 if order == "slaac_first":
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
+                    self.subnets.append(subnet_slaac)
                     subnet_dhcp = self.create_subnet(
                         self.network, ip_version=4)
+                    self.subnets.append(subnet_dhcp)
                 else:
                     subnet_dhcp = self.create_subnet(
                         self.network, ip_version=4)
+                    self.subnets.append(subnet_dhcp)
                     subnet_slaac = self.create_subnet(self.network, **kwargs)
+                    self.subnets.append(subnet_slaac)
                 port_mac = data_utils.rand_mac_address()
                 eui_ip = str(netutils.get_ipv6_addr_by_EUI64(
                     subnet_slaac['cidr'], port_mac))
                 port = self.create_port(self.network, mac_address=port_mac)
+                self.ports.append(port)
                 real_ips = dict([(k['subnet_id'], k['ip_address'])
                                  for k in port['fixed_ips']])
                 real_dhcp_ip, real_eui_ip = [real_ips[sub['id']]
@@ -267,7 +282,9 @@
                       'ipv6_address_mode': add_mode}
             kwargs = dict((k, v) for k, v in kwargs.items() if v)
             subnet = self.create_subnet(self.network, **kwargs)
+            self.subnets.append(subnet)
             port = self.create_port(self.network)
+            self.ports.append(port)
             port_ip = next(iter(port['fixed_ips']), None)['ip_address']
             self._clean_network()
             msg = ('Real IP address is {0} and it is NOT on '
@@ -289,6 +306,7 @@
                       'ipv6_address_mode': add_mode}
             kwargs = dict((k, v) for k, v in kwargs.items() if v)
             subnet = self.create_subnet(self.network, **kwargs)
+            self.subnets.append(subnet)
             ip_range = netaddr.IPRange(subnet["allocation_pools"][0]["start"],
                                        subnet["allocation_pools"][0]["end"])
             ip = netaddr.IPAddress(random.randrange(ip_range.first,
@@ -296,6 +314,7 @@
             port = self.create_port(self.network,
                                     fixed_ips=[{'subnet_id': subnet['id'],
                                                 'ip_address': ip}])
+            self.ports.append(port)
             port_ip = next(iter(port['fixed_ips']), None)['ip_address']
             self._clean_network()
             self.assertEqual(port_ip, ip,
@@ -310,6 +329,7 @@
         kwargs = {'ipv6_ra_mode': 'dhcpv6-stateful',
                   'ipv6_address_mode': 'dhcpv6-stateful'}
         subnet = self.create_subnet(self.network, **kwargs)
+        self.subnets.append(subnet)
         ip_range = netaddr.IPRange(subnet["allocation_pools"][0]["start"],
                                    subnet["allocation_pools"][0]["end"])
         ip = netaddr.IPAddress(random.randrange(
@@ -327,14 +347,16 @@
         kwargs = {'ipv6_ra_mode': 'dhcpv6-stateful',
                   'ipv6_address_mode': 'dhcpv6-stateful'}
         subnet = self.create_subnet(self.network, **kwargs)
+        self.subnets.append(subnet)
         ip_range = netaddr.IPRange(subnet["allocation_pools"][0]["start"],
                                    subnet["allocation_pools"][0]["end"])
         ip = netaddr.IPAddress(random.randrange(
             ip_range.first, ip_range.last)).format()
-        self.create_port(self.network,
-                         fixed_ips=[
-                             {'subnet_id': subnet['id'],
-                              'ip_address': ip}])
+        port = self.create_port(self.network,
+                                fixed_ips=[
+                                    {'subnet_id': subnet['id'],
+                                     'ip_address': ip}])
+        self.ports.append(port)
         self.assertRaisesRegex(lib_exc.Conflict,
                                "IpAddressAlreadyAllocated|IpAddressInUse",
                                self.create_port,
@@ -344,7 +366,9 @@
 
     def _create_subnet_router(self, kwargs):
         subnet = self.create_subnet(self.network, **kwargs)
+        self.subnets.append(subnet)
         router = self.create_router(admin_state_up=True)
+        self.routers.append(router)
         port = self.create_router_interface(router['id'],
                                             subnet['id'])
         body = self.ports_client.show_port(port['port_id'])
diff --git a/tempest/api/network/test_floating_ips.py b/tempest/api/network/test_floating_ips.py
index b4bb88e..504bfa8 100644
--- a/tempest/api/network/test_floating_ips.py
+++ b/tempest/api/network/test_floating_ips.py
@@ -64,8 +64,10 @@
         cls.router = cls.create_router(external_network_id=cls.ext_net_id)
         cls.create_router_interface(cls.router['id'], cls.subnet['id'])
         # Create two ports one each for Creation and Updating of floatingIP
+        cls.ports = []
         for i in range(2):
-            cls.create_port(cls.network)
+            port = cls.create_port(cls.network)
+            cls.ports.append(port)
 
     @decorators.attr(type='smoke')
     @decorators.idempotent_id('62595970-ab1c-4b7f-8fcc-fddfe55e8718')
diff --git a/tempest/api/network/test_routers.py b/tempest/api/network/test_routers.py
index 3ff12e4..8b03631 100644
--- a/tempest/api/network/test_routers.py
+++ b/tempest/api/network/test_routers.py
@@ -29,7 +29,6 @@
 
     def _cleanup_router(self, router):
         self.delete_router(router)
-        self.routers.remove(router)
 
     def _create_router(self, name=None, admin_state_up=False,
                        external_network_id=None, enable_snat=None):