Dynamic IPv6 DNS updates in Windows with dynv6

I recently spent way too much time trying to solve a basic problem: My IP address at home was no longer static, so all my links kept on breaking. I learned the answer was to use Dynamic DNS. There are a lot of hard and expensive ways to do this, but I found this was the most straightforward.

1) Sign up to dynv6. They will give you a <yourname>.dynv6.net domain name to point to your IP.
2) Go to https://dynv6.com/keys and find your HTTP token.
3) Install DDNS Updater. This is a simple service that can detect your IP and send it to update the IP for your domain name.
4) Under IPv6 update URL, put https://dynv6.com/api/update?zone=yourname.dynv6.net&token=yourtoken&ipv6=%IP% (Replacing yourname and yourtoken).

You can leave everything else blank. DDNS Updater will auto-pick a service to check your external IP. You can set up a CNAME alias if you don't want the domain under dynv6.net.