alt Hacker NewsGitHub should absolutely support IPv6, but until then... transip.eu provide IPv6 addresses which transparently proxy to github.com: https://www.transip.eu/knowledgebase/5277-using-transip-gith...
You'll need to update your DNS server to include those as AAAA records.
Do providers like NextDNS or RethinkDNS allow these sorts of overrides?
>The Github IPv6 Proxy can only be used for traffic to Github using a VPS from TransIP which uses IPv6.