diff --git a/etc/rpc_deploy/user_variables.yml b/etc/rpc_deploy/user_variables.yml
index cd3d808e6f..4db1af0ff6 100644
--- a/etc/rpc_deploy/user_variables.yml
+++ b/etc/rpc_deploy/user_variables.yml
@@ -62,6 +62,8 @@ glance_swift_store_user: "{{ rackspace_cloud_tenant_id }}:{{ rackspace_cloud_use
 glance_swift_store_key: "{{ rackspace_cloud_password }}"
 glance_swift_store_container: SomeContainerName
 glance_swift_store_region: SomeRegion
+# `internalURL` will cause glance to speak to swift via ServiceNet, use
+# `publicURL` to communicate with swift over the public network
 glance_swift_store_endpoint_type: internalURL