Hello,
Is dynv6.com working wih DietPi?
I have an account there and wanted to enter my data within DietPi under DynDNS.
Unfortunately, no connection is established. I am unsure which login/password/URL I have to enter under DietPi.
More: dynv6 APIs
Goal: Access my Raspberry from external via SSH and DynDNS.
Thank you 
why not using their update script and create an own cron job (running every 5 minutes)? Basically we do the same on our DDNS tool.
In dietpi-ddns something like this should work, leaving username/password empty:
https://dynv6.com/api/update?zone=my.domain.org&token=myAccessToken
Thanks, have on the homepage of dynv6 the IPv4 and IPv6 of my connection deposited. The dynv6 can also be pinged directly via the IPv6 and IPV4, as well as via MYDOMAIN.dynv6.net.
https://dynv6.com/api/update?zone=my.domain.org&token=myAccessToken I have deposited with my data at dietpi ddns and adapted it.
SSH pub and privatekey I created with puttygen.
SSH pub stored in “~/.ssh/authorized_keys” for dropbear
SSH private stored in Putty
Unfortunately it does not establish a connection for me from external. I tried the IPv4, IPv6 and domain.dynv6.net.
//Edit: Okay, think i found my problem. My Raspi hangs because of Tor-Snowflake in the guest WiFi of my Fritzbox. Here i can not oen/forward port 22 to access the Raspi from external.
Yes, port forwarding should not be possible into the guest network.