Description

IPv4 has a limit on the number of addresses per node/server. Investigate IPv6 support for the CNIs on the EKS cluster.
From AWS's EKS documentation (https://docs.aws.amazon.com/eks/latest/userguide/cni-custom-network.html):

If you plan to use custom networking only to help alleviate IPv4 address exhaustion, 
you can create a cluster using the IPv6 family instead.

This only pertains to the control network, since the data network is managed by the secondary CNI solution.

Control Network

Perform a deep dive into IPv6 support for the chosen control network CNIs on the EKS cluster, run tests, and report on the feasibility of using IPv6 on EKS.

• Investigate IPv6 support for chosen CNIs on the EKS cluster
• Apply IPv6 networking to a trial cluster
• Ensure pod communication over IPv6 is functional and stable

Since this is a open-ended task, more information should be added to the checklist as it becomes available.

Data Network

• Investigate support for IPv6 in the data network