The script does work when seeip.org is unreachable, so I changed the policy to define the public IP.
It solves the issue #1241
* Timeout limit on each try to solve the IP to avoid long waits;
* Extra public IP providers as failovers;
* the script only will try to solve an IP if the ENDPOINT is empty;
Co-authored-by: Stanislas <github@slange.me>
