don't include gateway if not set
diff --git a/xos/synchronizers/openstack/steps/sync_controller_networks.yaml b/xos/synchronizers/openstack/steps/sync_controller_networks.yaml
index eeab6d1..d04a925 100644
--- a/xos/synchronizers/openstack/steps/sync_controller_networks.yaml
+++ b/xos/synchronizers/openstack/steps/sync_controller_networks.yaml
@@ -30,8 +30,6 @@
         state=present
         {% if use_vtn %}
         gateway_ip={{ gateway }}
-        {% else %}
-        gateway_ip="None"
         {% endif %}
         dns_nameservers=8.8.8.8
         cidr={{ cidr }}