diff --git a/ironic_tempest_plugin/plugin.py b/ironic_tempest_plugin/plugin.py
index d060165..c411cc8 100644
--- a/ironic_tempest_plugin/plugin.py
+++ b/ironic_tempest_plugin/plugin.py
@@ -13,6 +13,7 @@
 
 import os
 
+from oslo_config import cfg
 from tempest import config as tempest_config
 from tempest.test_discover import plugins
 
@@ -34,6 +35,9 @@
         tempest_config.register_opt_group(
             conf, config.baremetal_introspection_group,
             config.BaremetalIntrospectionGroup)
+        # FIXME(dtantsur): pretend like Neutron does not exist due to random
+        # failures, see https://bugs.launchpad.net/bugs/1621791.
+        cfg.CONF.set_override('neutron', False, 'service_available')
 
     def get_opt_lists(self):
         return [