I‘ve wrote a blog post how to configure Docker so that container will get the correct IPv6 address of the request. In the default configuration it is just the IPv4 address of the docker interface.
Maybe helpful for one or the other :)
https://www.manuel-bauer.net/blog/docker-with-full-ipv6-support
Posted Jan 1, 2023, 9:59 PM UTC
Problem is you’re doing NAT66 with ULA addresses here, which is not standard compliant and may break stuff running in the container. These fd00::/8 addresses are meant to be local only (i.e. for traffic within the Docker host) so applications may ignore them for internet-bound traffic.
There’s some info how to set up Docker with GUA addresses here: https://blog.apnic.net/2021/07/06/docker-ipv6-networking-routing-and-ndp-proxying/
Thanks