default bridge to br-int for container, and blank for container-vm
diff --git a/xos/openstack_observer/steps/sync_container.py b/xos/openstack_observer/steps/sync_container.py
index 685b778..b9b41c5 100644
--- a/xos/openstack_observer/steps/sync_container.py
+++ b/xos/openstack_observer/steps/sync_container.py
@@ -72,11 +72,13 @@
                 pd["snoop_instance_mac"] = instance_port.mac
                 pd["snoop_instance_id"] = instance_port.instance.instance_id
                 pd["src_device"] = ""
+                pd["bridge"] = "br-int"
             else:
                 # container in VM
                 pd["snoop_instance_mac"] = ""
                 pd["snoop_instance_id"] = ""
                 pd["parent_mac"] = self.get_parent_port_mac(o, port)
+                pd["bridge"] = ""
 
             for (k,v) in port.get_parameters().items():
                 pd[k] = v