diff --git a/ntools/one-m/ansible/roles/rethinkdb/templates/rethinkdb.conf.j2 b/ntools/one-m/ansible/roles/rethinkdb/templates/rethinkdb.conf.j2
index 273a5a2d..1b9b66b6 100644
--- a/ntools/one-m/ansible/roles/rethinkdb/templates/rethinkdb.conf.j2
+++ b/ntools/one-m/ansible/roles/rethinkdb/templates/rethinkdb.conf.j2
@@ -1,5 +1,6 @@
 directory=/data
 bind=all
+# The IP address of localhost is 127.0.0.1
 bind-http=127.0.0.1
 direct-io
 # List of *other* hostnames in the cluster: