Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/defer/__init__.py", line 473, in _inline_callbacks
    result = gen.throw(result.type, result.value, result.traceback)
  File "/usr/lib/python2.7/dist-packages/aptdaemon/networking.py", line 186, in get_network_state
    "ActiveConnections")
DBusException: org.freedesktop.DBus.Error.Failed: Unsupported property