title: How to FORCE docker to bind to ip4 addresses?
body: <p>How do I <strong>FORCE</strong> docker to bind to ip4 addresses for port forwarding, <strong>DISREGARDING</strong> any claims by the docker team that those binds that show as ipv6-only in <code>netstat</code> somehow <em>should</em> work just fine and I shouldn't need to do anything else?</p>
  <p>I don't trust the automagic. What I can <strong>see with my own eyes</strong> is that:</p>
  <ul>
  <li>I can connect to the mysql server from inside the container, so it is obviously running</li>
  <li>I cannot connect to the mysql server in the container from the host, even though I have quintuply checked that I am trying to connect to the correct port</li>
  <li>docker-proxy is actually listening on this port, but only on an ipv6 address</li>
  </ul>
  <p>I am in the middle of debugging a connection issue, and I am trying to definitively eliminate possible causes one by one.</p>