title: Priorities the traffic using TC
body: <p>I would like to Traffic Control TC to priorities the traffic. For example I need the TCP goes via band0, UDP goes via band1, and other traffic goes via band3.</p>
  
  <p>I create the qdisc as follows:</p>
  
  <p>tc qdisc add dev eth0 root handle 1: prio 
  tc qdisc add dev eth0 parent 1:1 handle 10: sfq
  tc qdisc add dev eth0 parent 1:1 handle 20: sfq
  tc qdisc add dev eth0 parent 1:1 handle 30: sfq</p>
  
  <p>but when I add filter, e.g.</p>
  
  <p>tc filter add dev eth0 protocol ip parent 1:1 sfq 1 u32 match ip protocol 6 0xff flowid 1:10</p>
  
  <p>There was a problem "Unknown filter "sfq", hence option "1" is unparsable"</p>