aws_lb Data Source returns error setting subnet_mapping: Invalid address to set: []string{"subnet_mapping", "0", "private_ipv4_address"}

[ghost]

This issue was originally opened by @kartik-moolya as hashicorp/terraform#25806. It was migrated here as a result of the provider split. The original body of the issue is below.

---

Terraform Version

Terraform v0.12.29

Terraform Configuration Files

data "aws_lb" "nginxlb" {
  arn = var.nginx_lb_arn
  name = "mvp-ui-nginx-NLB"
}

Debug Output

https://gist.github.com/kartik-moolya/7f8d657aec8990eef2707565c4e77f8e

Crash Output

Expected Behavior

The Data should have imported the LB details

Actual Behavior

Got the below error

Error: error setting subnet_mapping: Invalid address to set: []string{"subnet_mapping", "0", "private_ipv4_address"}

  on main.tf line 39, in data "aws_lb" "nginxlb":
  39: data "aws_lb" "nginxlb" {

Steps to Reproduce

1. terraform init
2. terraform apply

Additional Context

The loadbalancer is a public Network load balancer and was created using cloudformation

References

[ewbankkit]

@kartik-moolya Thanks for raising this issue.
There is a PR to address this issue, #14545, scheduled for the upcoming v3.2.0 release.

[kartik-moolya]

@kartik-moolya Thanks for raising this issue.
There is a PR to address this issue, #14545, scheduled for the upcoming v3.2.0 release.

Thankyou for a quick response. Do you have any estimate on when can the fix be ready?

[bflad]

The fix for this has been merged and will release with version 3.2.0 of the Terraform AWS Provider, later today. Thanks to @DrFaust92 for the implementation. 👍

[ghost]

This has been released in version 3.2.0 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 for triage. Thanks!

[ghost]

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 feel this issue should be reopened, we encourage creating a new issue linking back to this one for added context. Thanks!