ddns for dnspod.cn which supports both IPv4 and IPv6
Clone this project, and modify file config-sample.ini(set dnspod-token and access-key) before rename the file to config.ini
Install nginx & php(with fpm and curl modules)
Run composer install to install dependencies, which will create the vendor folder.
If you don't have the composer tool, just download it from vendor.tar.gz.
Modify nginx-sample.conf and copy to /path/to/nginx-config-dir/. (Assume ddns.your-domain.com for IPv4 and ddns6.your-domain.com for IPv6)
Restart or reload nginx
On you client, just add the line to your crontab:
* * * * * logfile='/tmp/ddns6.log'; echo "\n$(date)" >> $logfile && curl 'http://ddns6.your-domain.com?key=YOUR-KEY&domain=DOMAIN&sub=SUBDOMAIN' >> $logfile