That's neat, but that means you'll be hammering the Linode API and DNS servers every few minutes even when your IP hasn't changed...

My script runs every 5 minutes, checks if the IP is different from the previous run, and if so, triggers the API update. If you skip all that logic and simply execute the API call every 5 minutes, you're causing unnecessary load on Linode's end.

My IP very rarely changes, so I have it running daily or something like that.