CloudFlare-ddns updates

[tackynugget]

Hi @boostchicken,

Thank you so much for your work here. It is really great and helpful.

I'm not sure how to recommend a change to the CloudFlare-ddns readme, but I wanted to mention that before you can execute /mnt/data/on_boot.d/30-cloudflare-ddns.sh, you have to grant the root account execute permissions. This may be because of the n00bish way I copied 30-cloudflare-ddns.sh to /mnt/data/on_boot.d (I used touch to create the file and vi to copy/paste content) but I then had to run chmod u=rwx /mnt/data/on_boot.d/30-cloudflare-ddns.sh to execute the script.

Also, I noticed after executing podman logs cloudflare-ddns that there were some updates to the config.json file maintained here. Among the addition of manually toggling IPv4 (a)/IPv6 (aaaa) and purgeUnknownRecords it appears the ttl setting has been removed. When I executed the 30-cloudflare-ddns.sh script the first time with the config.json file in your project, I noticed it seemed to ignore my ttl settings, which suggests this option is no longer configurable. When I re-executed the 30-cloudflare-ddns.sh script with the new config.json, it didn't seem to mind the missing ttl setting.

I hope this helps.

I'm still learning GitHub and UDM tinkering.

Thanks again!