File \"/usr/lib/python2.7/dist-packages/nova/compute/manager.py\", line 2349, in _build_and_run_instance
===================
Neutron Error
=====================
ERROR oslo_messaging._drivers.common [req-4f469e4b-d7dd-4e67-9533-968b751774cb ] ['Traceback (most recent call last):\n', '  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 142, in _dispatch_and_reply\n    executor_callback))\n', '  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 186, in _dispatch\n    executor_callback)\n', '  File "/usr/lib/python2.7/dist-packages/oslo_messaging/rpc/dispatcher.py", line 130, in _do_dispatch\n    result = func(ctxt, **new_args)\n', '  File "/usr/lib/python2.7/dist-packages/neutron/plugins/ml2/drivers/type_tunnel.py", line 248, in tunnel_sync\n    raise exc.InvalidInput(error_message=msg)\n', "InvalidInput: Invalid input for operation: (u'Tunnel IP %(ip)s in use with host %(host)s', {'ip': u'x.x.x.x', 'host': u'controller'}).\n"]