The snull.c that I had downloaded is tested with kernel 2.4. I am currently using 2.4.2. There is this function "dev_kfree_skb" that passed two arguments but only accept 1. What should I do with this? Can anybody give me some pieces of advise. Thanks a lot. -liz __________________________________________________ Do you Yahoo!? New DSL Internet Access from SBC & Yahoo! http://sbc.yahoo.com - : 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