title: pip connection failure - cannot fetch index base URL
body: <p>I can not neither install python packages via pip command and nor join the url <a href="http://pypi.python.org/" rel="nofollow">http://pypi.python.org/</a> from my network subnet however When I connect to another network with same computer but different IP and subnet, I can install packages and join url.
  I get the error message "Cannot fetch index base URL <a href="http://pypi.python.org/simple/" rel="nofollow">http://pypi.python.org/simple/</a>" 
  when I do pip install.
  I think this is something with the IP-ban issue becuase it was working previously.
  Is there anyone had an experience like this before? </p>