diff --git a/neutron_tempest_plugin/scenario/test_trunk.py b/neutron_tempest_plugin/scenario/test_trunk.py
index 98fe6ae..8f260ea 100644
--- a/neutron_tempest_plugin/scenario/test_trunk.py
+++ b/neutron_tempest_plugin/scenario/test_trunk.py
@@ -15,6 +15,7 @@
 import collections
 
 from neutron_lib import constants
+from neutron_lib.utils import test
 from oslo_log import log as logging
 from tempest.common import utils as tutils
 from tempest.lib.common.utils import data_utils
@@ -246,6 +247,7 @@
             self._wait_for_trunk(vm.trunk)
             self._assert_has_ssh_connectivity(vm1.ssh_client)
 
+    @test.unstable_test("bug 1897796")
     @testtools.skipUnless(
         (CONF.neutron_plugin_options.advanced_image_ref or
          CONF.neutron_plugin_options.default_image_is_advanced),