diff --git a/planetstack/openstack_observer/steps/sync_controller_networks.py b/planetstack/openstack_observer/steps/sync_controller_networks.py
index bb18b39..43769a7 100644
--- a/planetstack/openstack_observer/steps/sync_controller_networks.py
+++ b/planetstack/openstack_observer/steps/sync_controller_networks.py
@@ -16,92 +16,50 @@
     requested_interval = 0
     provides=[Network, ControllerNetworks, Sliver]
 
+    def alloc_subnet(self, uuid):
+        a = 10
+        b = uuid >> 32
+        c = uuid & 0xffffffff
+	d = 0
+
+	cidr = '%d.%d.%d.%d/24'%(a,b,c,d)
+	return cidr
+	
+
     def fetch_pending(self, deleted):
         if (deleted):
             return ControllerNetworks.deleted_objects.all()
         else:
             return ControllerNetworks.objects.filter(Q(enacted__lt=F('updated')) | Q(enacted=None))
 
-    def get_next_subnet(self, controller=None):
-        # limit ourself to 10.0.x.x for now
-        valid_subnet = lambda net: net.startswith('10.0')
-
-        driver = self.driver.admin_driver(controller=controller,tenant='admin')
-        subnets = driver.shell.quantum.list_subnets()['subnets']
-        ints = [int(IPNetwork(subnet['cidr']).ip) for subnet in subnets \
-                if valid_subnet(subnet['cidr'])]
-        ints.sort()
-        if ints:
-            last_ip = IPAddress(ints[-1])
-        else:
-            last_ip = IPAddress('10.0.0.0')
-        last_network = IPNetwork(str(last_ip) + "/24")
-        next_network = IPNetwork(str(IPAddress(last_network) + last_network.size) + "/24")
-        return next_network
 
     def save_controller_network(self, controller_network):
-        if (not controller_network.net_id) and controller_network.network.template.sharedNetworkName:
-            # It's a shared network, try to find the shared network id
-
-            quantum_networks = self.driver.shell.quantum.list_networks(name=controller_network.network.template.sharedNetworkName)["networks"]
-            if quantum_networks:
-                logger.info("set shared network id %s" % quantum_networks[0]["id"])
-                controller_network.net_id = quantum_networks[0]["id"]
-            else:
-                logger.info("failed to find shared network id for controller")
-                return
-
-        # At this point, it must be a private network, so create it if it does
-        # not exist.
-
-        if not controller_network.net_id:
             network_name = controller_network.network.name
+            subnet_name = '%s-%d'%(network_name,controller_network.pk)
+	    cidr = self.alloc_subnet(controller_network.pk)
+	    network_fields = {'endpoint':controller_network.controller.auth_url,
+			'admin_user':controller_network.network.slice.creator.email,
+			'tenant_name':controller_network.network.slice.slicename,
+			'admin_password':controller_network.controller.admin_password,
+			'name':network_name,
+			'subnet_name':subnet_name,
+			'cidr':cidr
+			}
 
-            # create network
-            os_network = self.driver.create_network(network_name, shared=True)
-            controller_network.net_id = os_network['id']
+	    res = run_template('sync_controller_networks.yaml', network_fields)
 
-            # create router
-            #router = self.driver.create_router(network_name)
-            #controller_network.router_id = router['id']
+	    if (len(res)!=2):
+		raise Exception('Could not sync network %s'%controller_network.network.name)
+	    else:
+		network_id = res[0]['id'] 
+		subnet_id = res[1]['id'] 
+		controller_network.net_id = network_id
+		controller_network.subnet = cidr
+		controller_network.subnet_id = subnet_id
+		controller_network.save()
 
-            # create subnet
-            next_subnet = self.get_next_subnet(controller=controller_network.controller.name)
-            cidr = str(next_subnet.cidr)
-            ip_version = next_subnet.version
-            start = str(next_subnet[2])
-            end = str(next_subnet[-2])
-            subnet = self.driver.create_subnet(name=network_name,
-                                               network_id = controller_network.net_id,
-                                               cidr_ip = cidr,
-                                               ip_version = ip_version,
-                                               start = start,
-                                               end = end)
-            controller_network.subnet = cidr
-            controller_network.subnet_id = subnet['id']
-            # add subnet as interface to slice's router
-            #self.driver.add_router_interface(router['id'], subnet['id'])
-            # add external route
-            #self.driver.add_external_route(subnet)
-            logger.info("created private subnet (%s) for network: %s" % (cidr, controller_network.network))
+            	logger.info("sync'ed subnet (%s) for network: %s" % (controller_network.subnet, controller_network.network))
 
-        # Now, figure out the subnet and subnet_id for the network. This works
-        # for both private and shared networks.
-
-        if (not controller_network.subnet_id) or (not controller_network.subnet):
-            (controller_network.subnet_id, controller_network.subnet) = self.driver.get_network_subnet(controller_network.net_id)
-            logger.info("sync'ed subnet (%s) for network: %s" % (controller_network.subnet, controller_network.network))
-
-        if (not controller_network.subnet):
-            # this will generate a non-null database constraint error
-            #   ... which in turn leads to transaction errors
-            # it's probably caused by networks that no longer exist at the
-            # quantum level.
-
-            logger.info("null subnet for network %s, skipping save" % controller_network.network)
-            return
-
-        controller_network.save()
 
     def sync_record(self, controller_network):
         logger.info("sync'ing network controller %s for network %s slice %s controller %s" % (controller_network, controller_network.network, str(controller_network.network.owner), controller_network.controller))