I will be maintaining the rust version of this going forward: cloudflare-dyndns-rust, so please give it a shot and file any issues against that, if you'd like me to take a look.
This is a tool (golang app + systemd unit files) that will run a dynamic DNS client on your machine in order to keep Cloudflare DNS records up to date and pointing at the network that this tool runs from.
You will need the gb tool for building go code: http://getgb.io
make will restore the vendored packages using the gb-vendor plugin, and then it will build the cloudflare-dyndns binary.
That's all.
First, update cloudflare-dyndns.service to point to the location of the built binary. It currently references a path that is probably only present on my machines.
Second, copy cloudflare-dyndns.config.example to cloudflare-dyndns.config and make the appropiate changes to the file, inserting your CloudFlare email and api-key.
Third, edit the cloudflare-dyndns.timer unit file so that the app will run as often as you need. It's set to run every 5 minutes by default.
Finally, execute make install-systemd to install the config file and the systemd unit files.
If you'd like to undo the installation steps, you may run make uninstall-systemd to remove the config files, disable the service and remove the service unit files.