Hello
Hope I'm posting this is the right place, only joined the forum to drop this piece of code for anybody to use. While evaluating OPNsense as a replacement for PFSense I couldn't find a native DDNS plug-in for Porkbun so I rolled my own; code at https://github.com/zaphod80013/opnsense-ddns-porkbun)or search github zaphod80013 opnsense-ddns-porkbun. Since OPNsense didn't solve the network prefix translation issue I was seeing in PFSense I've no reason to switch at this time but the code may be useful to someone.