Unable to dis associate public ip address id in resource

[VaijanathB]

Terraform Version. : v0.11.8-dev
Provider Verision : Latest

• azurerm_network_interface

Terraform Configuration Files

resource "azurerm_resource_group" "test" {
  name     = "test-resources"
  location = "West US 2"
}

resource "azurerm_virtual_network" "test" {
  name                = "test-network"
  address_space       = ["10.0.0.0/16"]
  location            = "${azurerm_resource_group.test.location}"
  resource_group_name = "${azurerm_resource_group.test.name}"
}

resource "azurerm_subnet" "test" {
  name                 = "acctsub"
  resource_group_name  = "${azurerm_resource_group.test.name}"
  virtual_network_name = "${azurerm_virtual_network.test.name}"
  address_prefix       = "10.0.2.0/24"
}

resource "azurerm_public_ip" "test" {
  name                         = "test-pip"
  location                     = "${azurerm_resource_group.test.location}"
  resource_group_name          = "${azurerm_resource_group.test.name}"
  public_ip_address_allocation = "Dynamic"
  idle_timeout_in_minutes      = 30

  tags {
    environment = "test"
  }
}

resource "azurerm_network_interface" "test" {
  name                = "test-nic"
  location            = "${azurerm_resource_group.test.location}"
  resource_group_name = "${azurerm_resource_group.test.name}"

  ip_configuration {
    name                          = "testconfiguration1"
    subnet_id                     = "${azurerm_subnet.test.id}"
    private_ip_address_allocation = "Dynamic"
    public_ip_address_id          = "${azurerm_public_ip.test.id}"
  }
}

Commands

Run terraform apply on the above configuration files.

Now comment the public_ip_address_id parameter in the NIC resource.

terraform plan

Expected output
Terraform realizes the change and modifies the NIC resource. Currently this is not happening and if you try to delete PIP then it blows up.

[ghost]

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