diff --git a/tempest/api/compute/admin/test_live_migration.py b/tempest/api/compute/admin/test_live_migration.py
index b1a7c52..836b975 100644
--- a/tempest/api/compute/admin/test_live_migration.py
+++ b/tempest/api/compute/admin/test_live_migration.py
@@ -31,6 +31,13 @@
 
 class LiveMigrationTestBase(base.BaseV2ComputeAdminTest):
 
+    # These tests don't attempt any SSH validation nor do they use
+    # floating IPs on the instance, so all we need is a network and
+    # a subnet so the instance being migrated has a single port, but
+    # we need that to make sure we are properly updating the port
+    # host bindings during the live migration.
+    create_default_network = True
+
     @classmethod
     def skip_checks(cls):
         super(LiveMigrationTestBase, cls).skip_checks()
@@ -44,16 +51,6 @@
                 "Less than 2 compute nodes, skipping migration test.")
 
     @classmethod
-    def setup_credentials(cls):
-        # These tests don't attempt any SSH validation nor do they use
-        # floating IPs on the instance, so all we need is a network and
-        # a subnet so the instance being migrated has a single port, but
-        # we need that to make sure we are properly updating the port
-        # host bindings during the live migration.
-        cls.set_network_resources(network=True, subnet=True)
-        super(LiveMigrationTestBase, cls).setup_credentials()
-
-    @classmethod
     def setup_clients(cls):
         super(LiveMigrationTestBase, cls).setup_clients()
         cls.admin_migration_client = cls.os_admin.migrations_client
diff --git a/tempest/api/compute/base.py b/tempest/api/compute/base.py
index aaf7a5a..7c2d9d2 100644
--- a/tempest/api/compute/base.py
+++ b/tempest/api/compute/base.py
@@ -39,6 +39,9 @@
     """Base test case class for all Compute API tests."""
 
     force_tenant_isolation = False
+    # Set this to True in subclasses to create a default network. See
+    # https://bugs.launchpad.net/tempest/+bug/1844568
+    create_default_network = False
 
     # TODO(andreaf) We should care also for the alt_manager here
     # but only once client lazy load in the manager is done
@@ -58,7 +61,10 @@
 
     @classmethod
     def setup_credentials(cls):
-        cls.set_network_resources()
+        # Setting network=True, subnet=True creates a default network
+        cls.set_network_resources(
+            network=cls.create_default_network,
+            subnet=cls.create_default_network)
         super(BaseV2ComputeTest, cls).setup_credentials()
 
     @classmethod
diff --git a/tempest/api/compute/security_groups/base.py b/tempest/api/compute/security_groups/base.py
index 49125d1..ef69a13 100644
--- a/tempest/api/compute/security_groups/base.py
+++ b/tempest/api/compute/security_groups/base.py
@@ -24,18 +24,14 @@
 class BaseSecurityGroupsTest(base.BaseV2ComputeTest):
     max_microversion = '2.35'
 
+    create_default_network = True
+
     @classmethod
     def skip_checks(cls):
         super(BaseSecurityGroupsTest, cls).skip_checks()
         if not utils.get_service_list()['network']:
             raise cls.skipException("network service not enabled.")
 
-    @classmethod
-    def setup_credentials(cls):
-        # A network and a subnet will be created for these tests
-        cls.set_network_resources(network=True, subnet=True)
-        super(BaseSecurityGroupsTest, cls).setup_credentials()
-
     @staticmethod
     def generate_random_security_group_id():
         if (CONF.service_available.neutron and
diff --git a/tempest/api/compute/servers/test_delete_server.py b/tempest/api/compute/servers/test_delete_server.py
index 0263b81..a7db88a 100644
--- a/tempest/api/compute/servers/test_delete_server.py
+++ b/tempest/api/compute/servers/test_delete_server.py
@@ -26,6 +26,7 @@
 
 
 class DeleteServersTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     # NOTE: Server creations of each test class should be under 10
     # for preventing "Quota exceeded for instances"
diff --git a/tempest/api/compute/servers/test_disk_config.py b/tempest/api/compute/servers/test_disk_config.py
index bc48069..5b8e7ab 100644
--- a/tempest/api/compute/servers/test_disk_config.py
+++ b/tempest/api/compute/servers/test_disk_config.py
@@ -24,6 +24,7 @@
 
 
 class ServerDiskConfigTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def skip_checks(cls):
diff --git a/tempest/api/compute/servers/test_instance_actions.py b/tempest/api/compute/servers/test_instance_actions.py
index b916a42..9f7e2d1 100644
--- a/tempest/api/compute/servers/test_instance_actions.py
+++ b/tempest/api/compute/servers/test_instance_actions.py
@@ -19,6 +19,7 @@
 
 
 class InstanceActionsTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_instance_actions_negative.py b/tempest/api/compute/servers/test_instance_actions_negative.py
index 1d3a790..4b5a2c3 100644
--- a/tempest/api/compute/servers/test_instance_actions_negative.py
+++ b/tempest/api/compute/servers/test_instance_actions_negative.py
@@ -20,6 +20,7 @@
 
 
 class InstanceActionsNegativeTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_list_servers_negative.py b/tempest/api/compute/servers/test_list_servers_negative.py
index f0915de..b95db5c 100644
--- a/tempest/api/compute/servers/test_list_servers_negative.py
+++ b/tempest/api/compute/servers/test_list_servers_negative.py
@@ -20,6 +20,7 @@
 
 
 class ListServersNegativeTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_multiple_create.py b/tempest/api/compute/servers/test_multiple_create.py
index 059454d..e176251 100644
--- a/tempest/api/compute/servers/test_multiple_create.py
+++ b/tempest/api/compute/servers/test_multiple_create.py
@@ -19,6 +19,7 @@
 
 
 class MultipleCreateTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @decorators.idempotent_id('61e03386-89c3-449c-9bb1-a06f423fd9d1')
     def test_multiple_create(self):
diff --git a/tempest/api/compute/servers/test_novnc.py b/tempest/api/compute/servers/test_novnc.py
index 7cf6d83..68e09e7 100644
--- a/tempest/api/compute/servers/test_novnc.py
+++ b/tempest/api/compute/servers/test_novnc.py
@@ -33,6 +33,7 @@
 
 
 class NoVNCConsoleTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def skip_checks(cls):
diff --git a/tempest/api/compute/servers/test_server_addresses.py b/tempest/api/compute/servers/test_server_addresses.py
index f79b05f..c936ce5 100644
--- a/tempest/api/compute/servers/test_server_addresses.py
+++ b/tempest/api/compute/servers/test_server_addresses.py
@@ -19,12 +19,7 @@
 
 
 class ServerAddressesTestJSON(base.BaseV2ComputeTest):
-
-    @classmethod
-    def setup_credentials(cls):
-        # This test module might use a network and a subnet
-        cls.set_network_resources(network=True, subnet=True)
-        super(ServerAddressesTestJSON, cls).setup_credentials()
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_server_addresses_negative.py b/tempest/api/compute/servers/test_server_addresses_negative.py
index b2b3cc0..f33c6d9 100644
--- a/tempest/api/compute/servers/test_server_addresses_negative.py
+++ b/tempest/api/compute/servers/test_server_addresses_negative.py
@@ -20,11 +20,7 @@
 
 
 class ServerAddressesNegativeTestJSON(base.BaseV2ComputeTest):
-
-    @classmethod
-    def setup_credentials(cls):
-        cls.set_network_resources(network=True, subnet=True)
-        super(ServerAddressesNegativeTestJSON, cls).setup_credentials()
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_server_group.py b/tempest/api/compute/servers/test_server_group.py
index 1b7cb96..4b5efaa 100644
--- a/tempest/api/compute/servers/test_server_group.py
+++ b/tempest/api/compute/servers/test_server_group.py
@@ -29,6 +29,7 @@
     policies = affinity/anti-affinity
     It also adds the tests for list and get details of server-groups
     """
+    create_default_network = True
 
     @classmethod
     def skip_checks(cls):
diff --git a/tempest/api/compute/servers/test_server_metadata.py b/tempest/api/compute/servers/test_server_metadata.py
index fe95018..9d87e1c 100644
--- a/tempest/api/compute/servers/test_server_metadata.py
+++ b/tempest/api/compute/servers/test_server_metadata.py
@@ -18,6 +18,7 @@
 
 
 class ServerMetadataTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_server_tags.py b/tempest/api/compute/servers/test_server_tags.py
index 8d0a4e3..3893b01 100644
--- a/tempest/api/compute/servers/test_server_tags.py
+++ b/tempest/api/compute/servers/test_server_tags.py
@@ -26,6 +26,8 @@
     min_microversion = '2.26'
     max_microversion = 'latest'
 
+    create_default_network = True
+
     @classmethod
     def skip_checks(cls):
         super(ServerTagsTestJSON, cls).skip_checks()
diff --git a/tempest/api/compute/servers/test_servers.py b/tempest/api/compute/servers/test_servers.py
index 1e3e966..3a4bd6d 100644
--- a/tempest/api/compute/servers/test_servers.py
+++ b/tempest/api/compute/servers/test_servers.py
@@ -25,6 +25,7 @@
 
 
 class ServersTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):
diff --git a/tempest/api/compute/servers/test_servers_negative.py b/tempest/api/compute/servers/test_servers_negative.py
index 1759d64..f42bb9c 100644
--- a/tempest/api/compute/servers/test_servers_negative.py
+++ b/tempest/api/compute/servers/test_servers_negative.py
@@ -30,6 +30,7 @@
 
 
 class ServersNegativeTestJSON(base.BaseV2ComputeTest):
+    create_default_network = True
 
     def setUp(self):
         super(ServersNegativeTestJSON, self).setUp()
@@ -47,11 +48,6 @@
         self.server_check_teardown()
 
     @classmethod
-    def setup_credentials(cls):
-        cls.set_network_resources(network=True, subnet=True)
-        super(ServersNegativeTestJSON, cls).setup_credentials()
-
-    @classmethod
     def setup_clients(cls):
         super(ServersNegativeTestJSON, cls).setup_clients()
         cls.client = cls.servers_client
diff --git a/tempest/api/compute/servers/test_virtual_interfaces.py b/tempest/api/compute/servers/test_virtual_interfaces.py
index f810ec5..dfd6ca4 100644
--- a/tempest/api/compute/servers/test_virtual_interfaces.py
+++ b/tempest/api/compute/servers/test_virtual_interfaces.py
@@ -32,11 +32,7 @@
 
     depends_on_nova_network = True
 
-    @classmethod
-    def setup_credentials(cls):
-        # This test needs a network and a subnet
-        cls.set_network_resources(network=True, subnet=True)
-        super(VirtualInterfacesTestJSON, cls).setup_credentials()
+    create_default_network = True
 
     @classmethod
     def setup_clients(cls):