Is your feature request related to a problem? Please describe.

I often heard from game company engineers that the iOS application connects with IPv6 network according to the specifications, while GameServer is listening with IPv4.
iOS IPv6-Only Networks: https://developer.apple.com/support/ipv6/

Currently Agones has feature called NodeExternalDNS.
And we have the FAQ page How do I use the DNS name of the Node?.
https://agones.dev/site/docs/faq/#how-do-i-use-the-dns-name-of-the-node

However, even if the user who use GKE turned on NodeExternalDNS, the user cannot get the ExternalDNS for node because GKE Node has only InternalIP/ExternalIP/InternalDNS.

So GKE users have to devise in order to connect IPv6 network.
Currently there is not a document for the user can refer to.

Describe the solution you'd like

It would be nice that we add the document for IPv6 connectivity.

Describe alternatives you've considered

None

Additional context

I read the following articles(These are japanese).

• https://speakerdeck.com/dena_tech/kubernetestoagonesniyoruriarutaimugemusabayun-yong-dena-techcon-2022?slide=54
• https://mixi-developers.mixi.co.jp/stble-voicechat-with-agones-aec5cbebe4a4