title: what is default Ip routing in mininet after creating topology and adding hosts?
body: <p>I have just started working with mininet and opendaylight.
  Iam trying to push MPLS services in nodes,but by default hosts are able to ping each other.</p>
  
  <p>How they are able to ping without configuring nodes?</p>
  
  <p>I don't understand this</p>