title: Ansible increment IP address
body: <p>I am passing a variable to ansible with  <code>--extra-vars "lan=10.10.10.1"</code></p>
  
  <p>I now need to increment this ip address so that the last octet is .2 so it will equal 10.10.10.2.</p>
  
  <p>How would this be achieved in ansible?</p>