Thanks Matti, in fact i want the packets to get out of the system, the whole purpose is to replace a user-space application just taking the packets out of the driver and stuffing them into the socket. (With all latency and stuff involved) Finally, it seems to be working now, but maybe one more question: I tried to let the packets have the host's own IP address as a source address, but then they are discarded - is there any option that i could set to avoid this? I can get away with another address, but it would seem more clean to me with the own address. Thanks, Wolfgang - : 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