[FEAT] Disassociate/detach the Public IP address from VM

[mloskot]

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Description

I have created Linux VM using this module with enabled public_ip_sku = Standard.
Then, I decided to delete the public IP, so I set public_ip_sku = null.
The generated plan looked correct indicating the resource "azurerm_public_ip" "public_ip" will be deleted.

Unfortunately, terraform apply failed with the following error:

module.stack_avd.module.vm_test["enabled"].azurerm_public_ip.public_ip[0]:
  Destroying... [id=/subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx/resourceGroups/rg-avd/providers/Microsoft.Network/publicIPAddresses/pip-test]
  Error: deleting Public I P Address (Subscription: "xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx"
  Resource Group Name: "rg-avd"
  Public I P Addresses Name: "pip-test"):
    performing Delete: unexpected status 400 (400 Bad Request) with error:
    PublicIPAddressCannotBeDeleted: Public IP address
      /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx/resourceGroups/rg-avd/providers/Microsoft.Network/publicIPAddresses/pip-test
      can not be deleted since it is still allocated to resource
      /subscriptions/xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxx/resourceGroups/rg-avd/providers/Microsoft.Network/networkInterfaces/nic-test/ipConfigurations/vm-test-nic-ipconfig.
      In order to delete the public IP, disassociate/detach the Public IP address from the resource.  To learn how to do this, see aka.ms/deletepublicip.

Would it be possible to improve this module in any way to ensure can be detached?

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

azurerm_network_interface, azurerm_public_ip, azurerm_linux_virtual_machine

Potential Terraform Configuration

No response

References

No response