title: Requests, bind to an ip
body: <p>I have a script that makes some requests with <code>urllib2</code>.</p>
  
  <p>I use the trick <a href="https://stackoverflow.com/questions/1150332/source-interface-with-python-and-urllib2">suggested elsewhere on Stack Overflow</a> to bind another ip to the application, where my my computer has two ip addresses (IP A and IP B).</p>
  
  <p>I would like to switch to using the <a href="http://docs.python-requests.org/en/latest/index.html" rel="nofollow noreferrer"><code>requests</code> library</a>. Does anyone knows how I can achieve the same functionality with that library?</p>