[Enhancement]: ALB IPv6-only Support for Internet Clients

[ddericco]

Description

On 2024-05-15 AWS announced support for Application Load Balancers (ALBs) without IPv4s for clients that can connect using just IPv6 addresses. You can either create a new dual-stack ALB without public IPv4 or modify existing ALBs to use dual-stack without public IPv4.

Affected Resource(s) and/or Data Source(s)

• aws_lb (resource and data source)

Potential Terraform Configuration

resource "aws_lb" "test" {
  load_balancer_type = "application"
  name               = "test"
  internal           = false
  security_groups    = [aws_security_group.lb_sg.id]
  subnets            = [for subnet in aws_subnet.public : subnet.id]

  ip_address_type    = "dualstack-without-public-ipv4"
}

References

• What's New: https://aws.amazon.com/about-aws/whats-new/2024/05/application-load-balancer-ipv6-internet-clients/
• API reference: https://docs.aws.amazon.com/elasticloadbalancing/latest/APIReference/API_CreateLoadBalancer.html

Would you like to implement a fix?

Yes

[github-actions]

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[github-actions]

Warning

This issue has been closed, meaning that any additional comments are hard for our team to see. Please assume that the maintainers will not see them.

Ongoing conversations amongst community members are welcome, however, the issue will be locked after 30 days. Moving conversations to another venue, such as the AWS Provider forum, is recommended. If you have additional concerns, please open a new issue, referencing this one where needed.

[github-actions]

This functionality has been released in v5.53.0 of the Terraform AWS Provider. Please see the Terraform documentation on provider versioning or reach out if you need any assistance upgrading.

For further feature requests or bug reports with this functionality, please create a new GitHub issue following the template. Thank you!

[github-actions]

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