Thanks, I understand now, but your Makefile ends up being almost the same as my original Makefile. Hence, when typing : insmod ./klar.o I get the same error as shown in my subject heading. I appreciate your time and effort, but the error seems to be more than something that just needs to be added to the Makefile (which I don't know enough to figure out what that is yet). Thanks again, Nic D. - : 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