title: CIDR Address is not within CIDR Address from VPC
body: <p>I have tried every combination of IP ranges for my CIDR block on my new VPC for AWS.</p>
  
  <p>My current CIDR is <code>172.31.0.0/16</code></p>
  
  <pre><code>171.31.0.0/32 (CIDR Address is not within CIDR Address from VPC)
  </code></pre>