r/aws_instance.metadata_options should support http_protocol_ipv6 in order to enable IPv6 IMDS

[nodakai]

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Description

r/aws_instance.metadata_options should support http_protocol_ipv6 = "enabled" etc. in order to enable IPv6 IMDS

New or Affected Resource(s)

• r/aws_instance

Potential Terraform Configuration

resource "aws_instance" "worker" {
  ...
    metadata_options {
    http_protocol_ipv6 = "enabled"
  }
}

References

• https://aws.amazon.com/blogs/networking-and-content-delivery/introducing-ipv6-only-subnets-and-ec2-instances/

Accessing local instance services over IPv6 Endpoints
...
--metadata-options "HttpEndpoint=enabled,HttpProtocolIpv6=enabled"

• https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/instance#metadata-options
• https://docs.aws.amazon.com/sdk-for-go/api/service/ec2/#ModifyInstanceMetadataOptionsInput

terraform-provider-aws/internal/service/ec2/instance.go

Line 1556 in 393773a

input := &ec2.ModifyInstanceMetadataOptionsInput{

• r/aws_launch_template.metadata_options already seems to support it, I'm going to try it as a workaround: https://registry.terraform.io/providers/hashicorp/aws/latest/docs/resources/launch_template#http_protocol_ipv6
  • but r/aws_instance.metadata_options seems more flexible and convenient

[ewbankkit]

Relates: #20768.
Relates: #20796.

[michal-kosinski]

I found this issue while configuring the ALB with instances in ipv6 only subnets. Are you aware of an existing issue for allowing setting IP address type = ipv6 type during creation of TG with Target Type = IP?

[github-actions]

This functionality has been released in v5.12.0 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]

I'm going to lock this issue because it has been closed for 30 days ⏳. This helps our maintainers find and focus on the active issues.
If you have found a problem that seems similar to this, please open a new issue and complete the issue template so we can capture all the details necessary to investigate further.