diff --git a/etc/kayobe/neutron.yml b/etc/kayobe/neutron.yml
index 489ee8f3f..6bd2e0828 100644
--- a/etc/kayobe/neutron.yml
+++ b/etc/kayobe/neutron.yml
@@ -47,6 +47,13 @@
 # secret: not currently supported
 #kolla_neutron_ml2_generic_switch_hosts:
 
+# List of Ansible hosts whose switch interfaces are to be configured as tagged
+# members of all networks managed by the genericswitch ML2 mechanism driver.
+# These hosts will be matched against the description fields in the
+# switch_interface_config variable for each switch to determine which
+# interfaces should be configured.
+#kolla_neutron_ml2_generic_switch_trunk_port_hosts:
+
 # Dict containing additional configuration for switches managed by the
 # genericswitch ML2 mechanism driver. For per-switch configuration of switches
 # in kolla_neutron_ml2_generic_switch_hosts, this may be set as a group or