Better late than never: our package repository and the download server are reachable over IPv6. Hosts in IPv6-only networks get their packages directly, without NAT64 or a proxy.
All services run dual-stack, IPv4 stays as it is.
curl shows whether your host takes the IPv6 path:
$ curl --ipv6 --head https://repo.linuxfabrik.ch/
Firewalls with rules per IP address. If you allow outgoing traffic to our servers by address, add the IPv6 addresses (excerpt):
$ dig +short AAAA repo.linuxfabrik.ch
$ dig +short AAAA download.linuxfabrik.ch
Moving your Linux servers to dual-stack? Have a look at our Service & Support plans and get in touch.