title: Openflow: Redirect TCP Flow only for Controller
body: <p>i'm new in openflow, i create with mininet a open flow toplogy with 1 controller (POX), one switch, and 3 hosts.</p>
  
  <p>My question is, how can i create one rule in switch to redirect to controller only tcp flow?</p>
  
  <p>*sorry for my poor english</p>