One of the -mm patches produces a warning which will be taken care of later when all the network drivers are converted to dynamically allocating net_device's. At that point, a massive patch will be needed that changes all instances of: unregister_netdev(dev); my cleanup... kfree(dev); // becomes release_netdev(dev); new release_netdev() will release the dev kobject at that point. I have the code ready, just been waiting till all net device's converted. Prefer not to break the world at this point. - : send the line "unsubscribe linux-net" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html