title: docker bridge network using docker-compose can't access VPN resources
body: <p>Environment:</p>
  
  <ul>
  <li>Ubuntu 17.04</li>
  <li>Docker version 17.03.1-ce, build c6d412e</li>
  <li>docker-compose version 1.14.0-rc1, build c18a7ad</li>
  </ul>
  
  <p>I'm connected to a Juniper VPN using openconnect and while docker can access the docker repo inside the VPN to download images, containers running on docker-compose can't access anything inside of it. Trying with actual IPs doesn't work either so it's not just a DNS issue.</p>
  
  <p>I've tried restarting docker, but didn't work. Any ideas on how to troubleshoot or fix this?</p>