Limiting of bandwidth per mac address using ipfw on FreeBSD

kldload ipfw && ipfw -q add 65000 allow all from any to any
kldload dummynet.ko
ipfw pipe 2 config bw 128kbit/s
sysctl net.link.ether.ipfw=1
ipfw add 96 pipe 2 ip from any to any MAC 00:aa:bb:cc:dd:ee any out xmit sk0