This program is intended for use in a crontab to update dynv6 records with current IP addresses.

To run it, you will need the following information in files in this directory:

• The hostname of your record; if your dynv6 zone is dom.ain and the record you want to update is your.dom.ain, this should be your. It should be stored in a file named .hostname.
• The ID of your zone in .zone. See the API docs for instructions on getting your zone ID. At some point, I hope to automate this.
• An authorization (HTTP) token in .token. You can generate these from the drop-down menu for your account on dynv6.com and selecting Keys.

The script attempts to minimize the load on dynv6.com by storing a cache of records information in .records. If there is no relevant information in .records, it will first attempt to retrieve information from dynv6. It sends new records or updates only as needed.

I created a cron entry in /etc/cron.hourly/dynv6 with contents like the following:

#!/usr/bin/sh
python3 /path/to/update_records.py 2>&1 | tee -a /path/to/log