Amazon Virtual Private Cloud (VPC) now allows you to bring your own IPv6 addresses using Bring Your Own IP (BYOIP). You can choose to advertise your IPv6 addresses on to the Internet for public connectivity or use it only for private connectivity to your on-premises networks by advertising them over Direct Connect. The IPv6 addresses brought over via BYOIP work exactly the same as Amazon-provided IPv6 addresses. For example, you can associate these IPv6 addresses to subnets, Elastic Network Interfaces (ENI) and EC2 instances within your VPC.
Source:: Amazon AWS