> If I have a million IPv6 servers, can I somehow accomplish the same thing using DNS64/NAT64/464XLAT? Assuming the incoming request is from an IPv4-only host.

> If I have a million IPv6 servers, can I somehow accomplish the same thing using DNS64/NAT64/464XLAT? Assuming the incoming request is from an IPv4-only host. You can have a front-end with IPv4 and have a box send the request to the back-end which is IPv6. This is how FaceMeta works for the last few years: they are completely IPv6 internally in their DC and only have IPv4 at the edges to service 'legacy' connections. * https://www.youtube.com/watch?v=IKYw7JlyAQQ https://www.youtube.com/watch?v=IKYw7JlyAQQ * https://engineering.fb.com/2017/01/17/production-engineering/legacy-support-on-ipv6-only-infra/ https://engineering.fb.com/2017/01/17/production-engineering...