Updated record(s) unspecified

[Chealer]

Calling cloudflare-ddns generally (and probably always, as of 2.1) updates a single resource record. However, documentation does not specify which record a call update.

The example from Ubuntu's manual page suggests the updated record is the record with the specified record name and type A (the IPv4 address).

[Tachi107]

Hi Philippe, cloudflare-ddns tries to automatically do the Right Thing™.

If you set record_name to ddns.example.org, and ddns.example.org has both A and AAAA records, the tool will update both of them. If the tool is unable to get both IPv4 and local IPv6 addresses when the record_name points to both A and AAAA records, the tool will exit with an error.

In other words:

• if your server is in an IPv4-only network, only create an A record.
• if your server is in an IPv6-only network, only create an AAAA record.
• if your server is in a dual-stack network, either create an A or AAAA record, or both.

If this explanation makes sense to you, I'll document it in the manual page and/or README file.

[Chealer]

Thank you @Tachi107, both the explanation and the behavior do make sense and I am glad that it behaves this way, although:

1. I am surprised by the dual-stack network behavior given your assertion in ticket Harder to use for multiple domains (records) simultaneously #25 that "It is not possible to update multiple records in a single atomic operation using Cloudflare's API, which is the main reason why I didn't add this feature (yet)."
2. If the behavior is indeed to update potentially more than a single record, then the README needs rectification in the following sentences.

It uses Cloudflare's API to update a given DNS record when needed.

This tool is a oneshot program: you run it, it updates the DNS record, and it terminates.

you can pass the API Token and the record name as command line arguments or you can use a ini configuration file, tipically located in /etc/cloudflare-ddns/config.ini, by passing no arguments at all

By the way, "tYpically" is spelled with a "y".