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Amazon EC2 Auto Scaling now supports Internet Protocol Version 6 (IPv6)

Published
September 30, 2025
https://aws.amazon.com/about-aws/whats-new/2025/09/amazon-ec2-auto-scaling-ipv6/

Amazon EC2 Auto Scaling IPv6 Support

Amazon EC2 Auto Scaling (ASG) now supports Internet Protocol Version 6 (IPv6), enabling dual-stack configuration (IPv4 and IPv6) connectivity for your Auto Scaling groups. IPv6 enables an expanded address space, allowing you to scale your application on AWS beyond the typical constraints of the number of IPv4 addresses in your VPC. With IPv6, you can assign easy to manage contiguous IP ranges to micro-services and get virtually unlimited scale for your applications. Moreover, with support for both IPv4 and IPv6, you can gradually transition applications from IPv4 to IPv6, enabling safer migration. IPv6 support is available in all commercial AWS regions (except New Zealand) and GovCloud regions where ASG is available.

What to do

  • Configure your network to use IPv6 endpoints.
  • Gradually transition applications from IPv4 to IPv6.

Source: AWS release notes

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