Comment 4 for bug 1618714

I cleared the pip cache but still no joy because of netifaces>=0.10.4

# rm -r ~/.cache/pip

11:49:21 Collecting netifaces>=0.10.4 (from oslo.utils>=3.16.0->rally==0.5.1.dev144)
11:49:21 Downloading netifaces-0.10.5.tar.gz

Proposed solution:

1. Fix the missing C headers file in netifaces-0.10.5
2. Supported an older version netifaces==0.10.4