title: Cloud9 Rails API challenge: allowed network but still cannot render console
body: <p>I am following along with <a href="http://teamtreehouse.com/library/build-a-rails-api" rel="nofollow">this Treehouse Build a Rails API course</a>. I am using Cloud9 IDE which I think is related to the problem. The step I am stuck on is creating a new list via the API in the console.</p>
  
  <p>At first I was receiving an error message saying "cannot render console" from the network. After googling this, I whitelisted the network in the development.rb file. The error message is different and so I believe I properly whitelisted it (or at least did something). But it does not have the desired effect and the error message seems to contradict itself.</p>
  
  <p><code>Started POST "/api/lists" for 123.456.78.999 at 2015-09-14 14:53:33 +0000 Cannot render console from 123.456.78.999! Allowed networks: 123.456.78.999, 127.0.0.0/127.123.123.123, ::1</code></p>
  
  <p>I've changed the numbers because I am not savvy about security. The point (and to me, the mystery) is that it says I can't render the console from a network that is apparently allowed (i.e., 123.456.78.999 === 123.456.78.999).</p>
  
  <p>I would appreciate any advice on what could be the problem. I had no trouble following along with the tutorial until this step; the commands I entered led to the same result as in the videos.</p>
  
  <p>This is the most recent command I've entered:</p>
  
  <p><code>curl -i -H "Accept: application/json" -H "Content-type: application/json" -X POST -d '{"title":"The Title will go here"}' https://myapp-me.c9.io/api/lists</code></p>
  
  <p>Entering that URL instead of "localhost" has worked for me thus far but it could also be related to the problem.</p>
  
  <p>Thank you for any clues and happy to post additional code if needed.</p>