Egress
AWS services support status for IPv6 egress.
This page is work in progress. Maybe in a few weeks?
This page will explore configuration options for IPv6 egress -- that is, for enabling AWS resources to make outbound IPv6 connections, both to other AWS services and to external services like Docker Hub.
In the meantime, please refer to my blog post on IPv6 egress on AWS. It explores the situation in detail, but isn't up to date with latest AWS service changes.