diff --git a/whitebox_neutron_tempest_plugin/tests/scenario/base.py b/whitebox_neutron_tempest_plugin/tests/scenario/base.py
index bef3320..72ff8ad 100644
--- a/whitebox_neutron_tempest_plugin/tests/scenario/base.py
+++ b/whitebox_neutron_tempest_plugin/tests/scenario/base.py
@@ -642,8 +642,10 @@ class BaseTempestWhiteboxTestCase(base.BaseTempestTestCase):
             external_network = self.client.show_network(
                 CONF.network.public_network_id)['network']
             if not external_network['shared']:
-                skip_reason = "External network is not shared"
-                self.skipTest(skip_reason)
+                self.addCleanup(self.os_admin.network_client.update_network,
+                                external_network['id'], shared=False)
+                self.os_admin.network_client.update_network(
+                    external_network['id'], shared=True)
             src_network = external_network
         else:
             src_network = _create_local_network()
diff --git a/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py b/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py
index 6cd2c0e..ab5a738 100644
--- a/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py
+++ b/whitebox_neutron_tempest_plugin/tests/scenario/test_multicast.py
@@ -313,8 +313,10 @@ class BaseMulticastTest(object):
         # when using SR-IOV environement and therefore only external network
         if topology == 'external' or topology == 'north-south':
             if not self.external_network['shared']:
-                skip_reason = "External network is not shared"
-                self.skipTest(skip_reason)
+                self.addCleanup(self.os_admin.network_client.update_network,
+                                self.external_network['id'], shared=False)
+                self.os_admin.network_client.update_network(
+                    self.external_network['id'], shared=True)
             sender = self._create_server_for_topology(
                 network_id=self.external_network['id'],
                 port_type=port_type)
diff --git a/whitebox_neutron_tempest_plugin/tests/scenario/test_qos.py b/whitebox_neutron_tempest_plugin/tests/scenario/test_qos.py
index f83c937..7472286 100644
--- a/whitebox_neutron_tempest_plugin/tests/scenario/test_qos.py
+++ b/whitebox_neutron_tempest_plugin/tests/scenario/test_qos.py
@@ -988,6 +988,11 @@ class QosTestExternalNetwork(QosBaseTest):
         super(QosTestExternalNetwork, self).setUp()
         self.external_network = self.client.show_network(
             CONF.network.public_network_id)['network']
+        if not self.external_network['shared']:
+            self.addCleanup(self.os_admin.network_client.update_network,
+                            self.external_network['id'], shared=False)
+            self.os_admin.network_client.update_network(
+                self.external_network['id'], shared=True)
         ext_vm = self._create_server(
             network=self.external_network,
             create_floating_ip=False)