Hi MrThreepwood. I think you might have provided an incorrect link. The link you provided was to something related to Linux's "watchdog" driver. I believe you meant to link to the reresolve-dns.sh script in the contribs directory. A bit of trivia: Jason wrote this script after I raised the issue of dynamic DNS on the IRC way back in 2017. It was first just on a pastebin, and then he added it to the contribs directory. 
