>> +        uuid = has_dun_uuid(iter);
>> +
>> +        if (bt_device != NULL && uuid == FALSE)
>> +            bluetooth_device_unregister(path);
>> +
>> +        else if (bt_device == NULL && uuid == TRUE)
>> +            bluetooth_device_register(proxy);
>> +    }
>
> I find this a bit hard to read. What about
>
>      if (uuid)
>          if (bt_device != NULL)
>              bluetooth_device_unregister(path);
>      else
>          if (bt_device == NULL)
>              bluetooth_device_regster(path);

Obviously, some braces are needed :)