title: Setting up a ddns service on my dreamhost account
body: <p>I deploy cellular modems that currently have sims with static ip addresses. For various reasons, we may move to providing sims without static ips.</p>
  
  <p>The cellular modem supports DDNS (bluetree modem). Is there any DDNS software that I can use so that I may tie each deployed modem to a sub domain of a domain I own?</p>
  
  <p>Or is it better to just stick with a service and pay the fee?</p>