ERROR 2013-03-10 15:10:54,010 maas.maasserver ################################ E
xception: Not authenticated as a known node. ################################
ERROR 2013-03-10 15:10:54,011 maas.maasserver Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 111
, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/usr/lib/python2.7/dist-packages/django/views/decorators/vary.py", line
22, in inner_func
    response = func(*args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/piston/resource.py", line 166, in __call__
    result = self.error_handler(e, request, meth, em_format)
  File "/usr/lib/python2.7/dist-packages/piston/resource.py", line 164, in __call__
    result = meth(request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/maasserver/api.py", line 308, in dispatch
    return function(self, request, *args, **kwargs)
  File "/usr/lib/python2.7/dist-packages/metadataserver/api.py", line 296, in read
    node = get_queried_node(request, for_mac=mac)
  File "/usr/lib/python2.7/dist-packages/metadataserver/api.py", line 119, in get_queried_node
    return get_node_for_request(request)
  File "/usr/lib/python2.7/dist-packages/metadataserver/api.py", line 87, in get_node_for_request
    raise PermissionDenied("Not authenticated as a known node.")
PermissionDenied: Not authenticated as a known node.