fix bug
diff --git a/plstackapi/openstack/driver.py b/plstackapi/openstack/driver.py
index 30bb569..965c612 100644
--- a/plstackapi/openstack/driver.py
+++ b/plstackapi/openstack/driver.py
@@ -82,7 +82,7 @@
         else:
             router = self.shell.quantum.create_router({'router': {'name': name}})
         if set_gateway:
-            nets = self.shell.quantum.list_networks()
+            nets = self.shell.quantum.list_networks()['networks']
             for net in nets:
                 if net['router:external'] == True: 
                     self.shell.quantum.add_gateway_router(router, net)