http://ciisqbg45nggykdl6rjdrq3wc64csga4vkphu66qsi65mypeitqedoad.onion/blog/port-striping-v2
We knew a lot of customers would want to start using those two as soon as possible, so we put off the upgrade a little longer while we figured out how to go about adding support for those two. OpenVPN wouldn't allow us to offer both secp521r1 and Ed25519 and Ed448 on the same instance, so we ended up back at the port striping problem.