[OpenWrt Wiki] DDNS client
https://openwrt.org/docs/guide-user/services/ddns/client23.10.2021 · OpenWrt uses ddns-scripts which are shell scripts. There are other scripts and programs available in the web, also some DDNS providers offer their own programs. All of them are currently not ported and tested on OpenWrt. Features ddns-scripts support other special communication functions: Run once, useful for usage with cron.