title: Is it possible to change a flow of ZMQ messages with routing to a physical address?
body: <p>I might be misunderstanding this, but it seems like when using a <code>ROUTER/DEALER</code> pattern in <code>zmq</code> when the request is recieved by the responder it will have to travel back up the way it came.</p>
  
  <p>It seems like it would incur less network latency to have the replier respond directly to the remote requester.</p>
  
  <p>Is there any way to do this, maybe by passing the physical address instead of the <code>id</code>?</p>
  
  <p><strong>Is it possible to create this sort of system?</strong></p>
  
  <p>I would like to see a transmission chain something like this <strong><code>REQ</code></strong>-><strong><code>ROUTER</code></strong>-><strong><code>DEALER</code></strong>-><strong><code>REP</code></strong>-><strong><code>REQ</code></strong>, where both occurences of <code>REQ</code> represent the same machine</p>