title: Pings do not work with manually set up Flow Rules
body: <p>I am currently playing around with ONOS and OpenFlow. I am using ONOS 2.0.0 and mininet-wifi. I have to following scenario: A wireless node moves between multiple access points. I would like to set up flow rules for the current and the following access point. The topology looks like this:</p>
  
  <p><a href="https://i.stack.imgur.com/UbuwF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/UbuwF.png" alt="Topology"></a></p>
  
  <p>The host with IP 10.0.0.1 moves between the access points. However, I cannot get pings to work between the two hosts. At the access points I have two rules forwarding everything from their port 1 to 2 to and vice versa:
  <a href="https://i.stack.imgur.com/AuEoN.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/AuEoN.png" alt="AP"></a></p>
  
  <p>In the core switch my manual flow rules look e.g. like that:
  <a href="https://i.stack.imgur.com/wXKOF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/wXKOF.png" alt="Core Switch"></a></p>
  
  <p>What am I doing wrong here? What is the reason I cannot ping in this scenario? The rules of the reactive forwarding app do not look really different. One difference in the code is that I am using FlowRule objects while the reactive forwarding uses the ForwardingObjective object. I also tried that without any difference.</p>