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Amazon EC2 Instance Connect Endpoint now supports IPv6 connectivity

Published
October 2, 2025
https://aws.amazon.com/about-aws/whats-new/2025/10/amazon-ec2-instance-connect-endpoint-ipv6

Amazon EC2 Instance Connect Endpoint IPv6 Support

Starting today, Amazon EC2 Instance Connect Endpoint supports Internet Protocol Version 6 (IPv6) connectivity. Customers can now configure EIC Endpoints to be dual-stack or IPv6 only to connect to instances with IPv6 addresses.

EC2 Instance Connect helps customers have SSH and RDP connectivity to their EC2 instances without using public IP addresses. With IPv6 support, customers can establish connectivity to instances in private subnets using IPv6 addresses, while maintaining backwards compatibility with existing instances and subnets using IPv4 addresses.

EC2 Instance Connect Endpoint IPv6 support is available in all AWS Commercial Regions, the AWS GovCloud (US) Regions, and the China Regions. Customers can access their private EC2 instances through AWS EC2 Console, AWS CLI, and SSH clients.

What to do

  • Configure EIC Endpoints to be dual-stack or IPv6 only.
  • Connect to instances using IPv6 addresses.
  • Maintain backwards compatibility with existing instances and subnets using IPv4 addresses.

Source: AWS release notes

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