I wonder if you would want to add a link to that page about setting up Cloudflare dynamic DNS on a Synology NAS? That's my use case, and I found a script[1] and a page[2] where people were having some success using it.

[1] https://github.com/joshuaavalon/SynologyCloudflareDDNS [2] https://luvis.se/tipstricks/set-up-dynamic-dns-with-cloudfla...