Even though Kubernetes does not support IPv6, pods running with host networking enabled can make use of the IPv6 address. IPv6 should be enabled by default or there can be an option to enable it for a Kubernetes node pool.
W
Whitney Jutzin
Merged in a post:
IPv6 Support for Kubernetes Cluster
A
Achilleas Naoumidis
I want to be able to access IPv6 addresses from inside a Pod.