title: ifconfig: cannot open /proc/net/dev in Centos 7 container on RHEL7.3
body: <p>I'm getting this error while running "ifconfig"  command in my CentOS 7 container</p>
  
  <p>The error i get is</p>
  
  <pre><code>cannot open /proc/net/dev (Permission Denied)
  </code></pre>
  
  <p>how to solve this..??? I'm getting this problem in my each container. I give full permission to /proc/net/dev but it's not working</p>