title: Can't associate an Elastic IP on Amazon EC2 Instance
body: <p>I just create a new EC2 instance on Amazon, with default options, and there is no way to associate an Elastic IP with this instance. The options are not available, and I haven't reach my limit.</p>
  
  <p>AWS added automatically an public ip, but I am afraid that this is not flexible as an Elastic IP (I will install Nginx on this instance).</p>
  
  <p>Anyone knows what networking configuration I need to change to AWS allow me set up Elastic IPs?</p>
  
  <p><a href="https://i.stack.imgur.com/dhsKz.png" rel="noreferrer"><img src="https://i.stack.imgur.com/dhsKz.png" alt="enter image description here"></a></p>