For who’s using DD-WRT Router firmware, here a screenshot regarding the configuration for Internet.bs Dynamic DNS update service (included in all domains registered with them):
This seems to work well 🙂
Below a script that I’ve created to update your Dynamic DNS service.
It has been tested on Raspian (Raspberry Pi), Ubuntu 18.04 and Debian 9.
It works with Internet.bs, No-ip.com and CloudFlare
Also, for who as a router running DD-WRT, here a quick article about how to set it up.