bus = dbus.SystemBus()
-server = dbus.Interface(bus.get_object("org.freedesktop.Avahi", '/org/freedesktop/Avahi/Server'), 'org.freedesktop.Avahi.Server')
+server = dbus.Interface(bus.get_object("org.freedesktop.Avahi", '/'), 'org.freedesktop.Avahi.Server')
def server_state_changed_callback(t):
print "Server::StateChanged: ", t