title: problems using host file in coredns
body: <p>I am trying to use the hosts plugin to use a hosts file in coredns.
  It works if I add a hostname, but if I use more than one it does not.
  I added this in my coredns.yaml</p>
  <pre><code>hosts /etc/kubernetes/example.hosts example.com {
          192.168.1.233 myserver.example.com
                fallthrough
             }
  </code></pre>
  <p>from a busybox I can ping myserver.example.com. Good</p>
  <p>If I add another hostname like this</p>
  <pre><code>hosts /etc/kubernetes/example.hosts example.com {
                192.168.1.233 myserver.example.com
                192.168.2.256 myserver2.example.com
                fallthrough
             }
  </code></pre>
  <p>than from the busybox I can't ping neither myserver not myserver2
  What am I doing wrong ?</p>