title: docker error when using log-driver="syslog" on OS X
body: <p>docker error when using <code>--log-driver="syslog"</code> on OS X</p>
  
  <p>I am trying to learn how to use <code>docker</code> containers on OS X (10.10.3), I understand the differences with the standard Linux implementation ( need boot2docker VM) and I wonder if there is any impact on the way I can log messages with syslog</p>
  
  <p>when I start a container with the <code>--log-driver="syslog"</code> option, the container is created but  I get an error upon start</p>
  
  <pre><code>~$ docker run --log-driver="syslog" --name daemon_dwayne -d ubuntu /bin/sh -c "while true; do echo hello_world; sleep 2; done;"
  1f623793049916d5c....
  FATA[0000] Error response from daemon: Cannot start container 1f623793049916d5....: Unix syslog delivery error
  </code></pre>
  
  <p>this is running fine on a Linux machine...  thanks for any hint</p>