title: Pip installation failing for all packages
body: <p>I'm not able to install any package using Pip, While doing it I'm getting the following the error</p>
  
  <blockquote>
    <p>Retrying (Retry(total=2, connect=None, read=None, redirect=None,
    status=None)) after connection broken by</p>
    
    <p>'NewConnectionError
    pip._vendor.urllib3.connection.VerifiedHTTPSConnection object at
    0x7f335d1a4ac8>: </p>
    
    <p>Failed to establish a new connection: [Errno -2] Name or service not
    known',)': /simple/flask-mysql/</p>
  </blockquote>