diff --git a/xos/openstack_observer/steps/sync_controller_networks.py b/xos/openstack_observer/steps/sync_controller_networks.py
index 6fe9cc0..ad1604b 100644
--- a/xos/openstack_observer/steps/sync_controller_networks.py
+++ b/xos/openstack_observer/steps/sync_controller_networks.py
@@ -12,6 +12,7 @@
 from util.logger import observer_logger as logger
 from observer.ansible import *
 from openstack.driver import OpenStackDriver
+from xos.config import Config
 import json
 
 import pdb
@@ -63,6 +64,7 @@
                     'ansible_tag':'%s-%s@%s'%(network_name,slice.slicename,controller_network.controller.name),
                     'cidr':cidr,
                     'gateway':self.alloc_gateway(controller_network.pk),
+                    'use_vtn':getattr(Config(), "networking_use_vtn", False),
                     'delete':False	
                     }
         return network_fields
diff --git a/xos/openstack_observer/steps/sync_controller_networks.yaml b/xos/openstack_observer/steps/sync_controller_networks.yaml
index bbf8ec2..b885516 100644
--- a/xos/openstack_observer/steps/sync_controller_networks.yaml
+++ b/xos/openstack_observer/steps/sync_controller_networks.yaml
@@ -28,7 +28,11 @@
         state=absent
         {% else %}
         state=present
+        {% if use_vtn %}
+        gateway_ip={{ gateway }}
+        {% else %}
         no_gateway=true
+        {% endif %}
         dns_nameservers=8.8.8.8
         cidr={{ cidr }}
         {% endif %}