http://ciisqbg45nggykdl6rjdrq3wc64csga4vkphu66qsi65mypeitqedoad.onion/blog/ipv6
Now, you can just plug in whatever config directives you need into the config generator page. You can also set the port, or enable --tls-crypt-v2, or force IPv4 (or IPv6), or have it only include IPs in the configs (not recommended, but maybe for some reason you can't do DNS lookups to connect).