If, like me, you're still using Linux 2.6.38 and would like to try out sch_sfb, here's a standalone module based on the version included in 2.6.39: http://www.pps.jussieu.fr/~jch/software/files/sch_sfb-20110409.tar.gz You'll need the net-next version of tc: git clone -b net-next git://git.kernel.org/pub/scm/linux/kernel/git/shemminger/iproute2.git -- jch