UPDATE: IPv6 load balancer endpoints are now GA.1 However, we continue to work on instance-level v6 addressing. Since I believe that at least some votes on this issue are for v6 all the way to the instance, I am leaving this issue open.
An error occurred while saving the commentDaniel Heitmann commented
7 years later and we still have no IPv6 for GKE instances. Kubernetes 1.6 will offer native dual stack support but GCP doesn't even do IPv6 apart from load balancer endpoints. Come on.