title: No internet - email notification
body: <p>In fact I have 2 routers both configured with a DDNS acccount.</p>
  <p>I wanted to setup a script, whereby I can send email notification in case internet service is down on the router.</p>
  <p>For example,</p>
  <p>ping router1.ddns.net , gets reply, internet is OK.
  ping router2.ddns.net, no reply, internet not OK, sends an email notification.</p>
  <p>Note I do have a firewall, but it does not have the capability to send notification if internet service is down.</p>