title: Vagrant reverse port forwarding?
body: <p>I'm working on a web services architecture. I've got some software that I need to run on the native host machine, not in Vagrant. But I'd like to run some client services on the guest.</p>
  
  <p>Vagrant's <code>config.vm.forwarded_port</code> parameter will open a port on the host and send the data to the guest. But how can I open a port on the guest and send the data to the host? (It's still port forwarding, but in the reverse direction.)</p>