Hi all, I tested the netem queuing discipline and everything worked except the reordering of packets. The kernel freezes. This happened with kernel version 2.6.8.1 (with Ingo Molnars voluntary preempt patch -P9) and 2.6.9-rc4-mm1, thats why I assume that the netem module is the reason for the freezes. Could anyone test whether the command below will result in a kernel freeze: 'tc qdisc add dev eth0 root netem delay 10ms gap 5' (or in 2.6.8 syntax 'tc qdisc add dev eth0 root netem latency 10ms gap 5') If there is anything I can do, please let me know. Thanks Markus - : 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