http://ciisqbg45nggykdl6rjdrq3wc64csga4vkphu66qsi65mypeitqedoad.onion/blog/ipv6
Originally, we didn't want to do IPv6 because when cryptostorm first started, the protocol had multiple vulnerabilities , and many implementations had their own vulnerabilities . These days, most IPv6 related vulnerabilities involve features that we're not using, so it should be safe enough to use now.