diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index 7b819e0..e50193e 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -240,6 +240,26 @@
                 network=self.new_net,
                 gateway_ip=None)
 
+    def _assign_nic_ip_address_by_port(self, ssh_client, port, device):
+        ip_output = ssh_client.exec_command('ip a')
+        ip_address = port['fixed_ips'][0]['ip_address']
+        ip_mask = CONF.network.project_network_mask_bits
+        # check if the address is not already in use, if not, set it
+        if ' ' + ip_address + '/' + str(ip_mask) not in ip_output:
+            try:
+                ssh_client.exec_command("sudo ip addr add %s/%s dev %s" % (
+                                        ip_address, ip_mask, device))
+                ssh_client.exec_command("sudo ip link set %s up" % device)
+            except exceptions.SSHExecCommandFailed as exc:
+                if 'RTNETLINK answers: File exists' in str(exc):
+                    LOG.debug(
+                        'IP address %(ip_address)s is already set in device '
+                        '%(device)s\nPrevious "ip a" output: %(ip_output)s',
+                        {'ip_address': ip_address, 'device': device,
+                         'ip_output': ip_output})
+                else:
+                    raise exc
+
     def _hotplug_server(self):
         old_floating_ip, server = self.floating_ip_tuple
         ip_address = old_floating_ip['floating_ip_address']
@@ -293,24 +313,7 @@
                                               % CONF.network.build_timeout)
 
         _, new_nic = self.diff_list[0]
-        ip_output = ssh_client.exec_command('ip a')
-        ip_address = new_port['fixed_ips'][0]['ip_address']
-        ip_mask = CONF.network.project_network_mask_bits
-        # check if the address is not already in use, if not, set it
-        if ' ' + ip_address + '/' + str(ip_mask) not in ip_output:
-            try:
-                ssh_client.exec_command("sudo ip addr add %s/%s dev %s" % (
-                                        ip_address, ip_mask, new_nic))
-                ssh_client.exec_command("sudo ip link set %s up" % new_nic)
-            except exceptions.SSHExecCommandFailed as exc:
-                if 'RTNETLINK answers: File exists' in str(exc):
-                    LOG.debug(
-                        'IP address %(ip_address)s is already set in device '
-                        '%(device)s\nPrevious "ip a" output: %(ip_output)s',
-                        {'ip_address': ip_address, 'device': new_nic,
-                         'ip_output': ip_output})
-                else:
-                    raise exc
+        self._assign_nic_ip_address_by_port(ssh_client, new_port, new_nic)
 
     def _get_server_nics(self, ssh_client):
         reg = re.compile(r'(?P<num>\d+): (?P<nic_name>\w+)[@]?.*:')
@@ -912,6 +915,7 @@
             ).format(ip_address=ip_address, nic=spoof_nic)
 
         ssh_client.exec_command(cmd)
+        self._assign_nic_ip_address_by_port(ssh_client, spoof_port, spoof_nic)
 
         new_mac = ssh_client.get_mac_address(nic=spoof_nic)
         self.assertEqual(spoof_mac, new_mac)