diff --git a/tempest/common/utils/linux/remote_client.py b/tempest/common/utils/linux/remote_client.py
index 9e1b61e..144ef60 100644
--- a/tempest/common/utils/linux/remote_client.py
+++ b/tempest/common/utils/linux/remote_client.py
@@ -102,11 +102,6 @@
         nic = self.exec_command(cmd)
         return nic.strip().strip(":").lower()
 
-    def assign_static_ip(self, nic, addr, network_mask_bits=28):
-        cmd = "sudo ip addr add {ip}/{mask} dev {nic}".format(
-            ip=addr, mask=network_mask_bits, nic=nic)
-        return self.exec_command(cmd)
-
     def get_dns_servers(self):
         cmd = 'cat /etc/resolv.conf'
         resolve_file = self.exec_command(cmd).strip().split('\n')
diff --git a/tempest/scenario/test_network_basic_ops.py b/tempest/scenario/test_network_basic_ops.py
index e3b27d0..91b863c 100644
--- a/tempest/scenario/test_network_basic_ops.py
+++ b/tempest/scenario/test_network_basic_ops.py
@@ -286,9 +286,10 @@
                                               % CONF.network.build_timeout)
 
         num, new_nic = self.diff_list[0]
-        ssh_client.assign_static_ip(
-            nic=new_nic, addr=new_port['fixed_ips'][0]['ip_address'],
-            network_mask_bits=CONF.network.project_network_mask_bits)
+        ssh_client.exec_command("sudo ip addr add %s/%s dev %s" % (
+                                new_port['fixed_ips'][0]['ip_address'],
+                                CONF.network.project_network_mask_bits,
+                                new_nic))
         ssh_client.exec_command("sudo ip link set %s up" % new_nic)
 
     def _get_server_nics(self, ssh_client):
diff --git a/tempest/tests/common/utils/linux/test_remote_client.py b/tempest/tests/common/utils/linux/test_remote_client.py
index 7af719c..ecb8e64 100644
--- a/tempest/tests/common/utils/linux/test_remote_client.py
+++ b/tempest/tests/common/utils/linux/test_remote_client.py
@@ -139,14 +139,6 @@
         self._assert_exec_called_with(
             "ip addr | awk '/ether/ {print $2}'")
 
-    def test_assign_static_ip(self):
-        self.ssh_mock.mock.exec_command.return_value = ''
-        ip = '10.0.0.2'
-        nic = 'eth0'
-        self.assertEqual(self.conn.assign_static_ip(nic, ip), '')
-        self._assert_exec_called_with(
-            "sudo ip addr add %s/%s dev %s" % (ip, '28', nic))
-
 
 class TestRemoteClientWithServer(base.TestCase):