Possible Issue In buffersizing.py

[kapeterson]

Myself and other have reported issues with the hard coded parents when limiting the rates in htb.

cmd = ("tc class change dev %s parent 1:0 classid 1:1 "
"htb rate %s burst 15k" % (iface, spd))

Had to change it to parent 5:0 classid 5:1 o get it to work.