That sounds like a plan. I will try that tonight when I get home and report back...
pkg install ddclient
2022-06-25T18:29:04-07:00 Notice ddclient[82993] 84797 - [meta sequenceId="4"] WARNING: Wait at least 5 minutes between update attempts. 2022-06-25T18:29:04-07:00 Notice ddclient[82993] 84797 - [meta sequenceId="3"] WARNING: last updated <never> but last attempt on Sat Jun 25 18:28:53 2022 failed. 2022-06-25T18:29:04-07:00 Notice ddclient[82993] 84797 - [meta sequenceId="2"] WARNING: skipping update of example.com from <nothing> to 111.111.111.111. 2022-06-25T18:29:04-07:00 Notice ddclient[82993] 84222 - [meta sequenceId="1"] WARNING: file /var/tmp/ddclient.cache, line 3: Invalid Value for keyword 'ip' = ''