[Bug]: Unknown values in aws_wafv2_ip_set.addresses provide inconsistent final plan

[johnsonaj]

Terraform Core Version

1.4.2

AWS Provider Version

4.59.0

Affected Resource(s)

• aws_wafv2_ip_set

Expected Behavior

Terraform to successfully apply configuration

Actual Behavior

Terraform returns the following error stating an inconsistent final plan.

Relevant Error/Panic Output Snippet

Error: Provider produced inconsistent final plan
│
│ When expanding the plan for aws_wafv2_ip_set.example to include new values learned so far during apply, provider "registry.terraform.io/hashicorp/aws" produced an invalid new value for .addresses: was null, but now
│ cty.SetVal([]cty.Value{cty.StringVal("127.0.0.1/32"), cty.StringVal("44.237.22.240/32")}).
│
│ This is a bug in the provider, which should be reported in the provider's own issue tracker.

Terraform Configuration Files

resource "aws_eip" "example" {
  vpc = true
}

resource "aws_wafv2_ip_set" "example" {
  name               = "example"
  description        = "Example IP set"
  scope              = "REGIONAL"
  ip_address_version = "IPV4"

  addresses = ["127.0.0.1/32",
    "${aws_eip.example.public_ip}/32"
  ]
}

Steps to Reproduce

• Create a configuration that has an unknown value in addresses
• Terraform apply.

Debug Output

No response

Panic Output

No response

Important Factoids

No response

References

terraform-provider-aws/internal/service/wafv2/ip_set.go

Lines 53 to 79 in 3db3102

	"addresses": {
	Type: schema.TypeSet,
	Optional: true,
	MaxItems: 10000,
	Elem: &schema.Schema{Type: schema.TypeString},
	DiffSuppressFunc: func(k, old, new string, d *schema.ResourceData) bool {
	o, n := d.GetChange("addresses")
	oldAddresses := o.(*schema.Set).List()
	newAddresses := n.(*schema.Set).List()
	if len(oldAddresses) == len(newAddresses) {
	for _, ov := range oldAddresses {
	hasAddress := false
	for _, nv := range newAddresses {
	if verify.CIDRBlocksEqual(ov.(string), nv.(string)) {
	hasAddress = true
	break
	}
	}
	if !hasAddress {
	return false
	}
	}
	return true
	}
	return false
	},
	},

Would you like to implement a fix?

None

[github-actions]

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[github-actions]

This functionality has been released in v4.61.0 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.