It’s currently possible to have a dualstack NLB with either IPv4 or IPv6 target groups. This way, client IP cannot be preserved both for IPv4 and IPv6 as summarized in table 2 here https://aws.amazon.com/blogs/networking-and-content-delivery/dual-stack-architectures-for-aws-and-hybrid-networks-part-2/. We’d like to be able to preserve client IP for both IPv4 and IPv6 without using proxy protocol and it seems this could be possible if dualstack target groups were available. Is it something which is considered for the future? If so, do you have any estimated time of arrival?