Previously, I used
curl to trigger
dyndnsd updates via my Raspberry Pis. This worked well for many months, but lacked IPv6 support as
dyndnsd was interpreting my IP from the request. Fortunately, the daemon accepts parameters for IPv4 and IPv6 addresses, so I wrote a Go program to handle regular updates. It still relies on cron, but passes explicit IP values and moves all options to a configuration file.
The client is available from https://git.ethitter.com/open-source/dyndnsd-client. I don't provide built binaries yet, but I'd like to soon.
If your ISP doesn't support IPv6, or if you run multiple daemons on the same network, options are available for your situation. Take a look at the readme for more.
Hopefully someone else finds this useful!