Droplet not reachable via IPv6
I enabled IPv6 for an existing droplet and followed this guide to set it up: https://www.digitalocean.com/community/tutorials/how-to-enable-ipv6-for-digitalocean-droplets
I am now able to
ping6 google.com, both from my local computer as well from the droplet. However, I can't reach the droplet via IPv6.
mtr -6 <ip> shows
fra1-edge1.digitalocean.com as the last reachable host. Any idea how to fix it or at least analyse the issue?
The droplet was created with docker-machine, I just installed all updates (New kernel installed, but I still use the default one), started a docker container and tried to setup IPv6 as described in that guide.