Support for creating Public IP with specific IP address

[cstandrew]

Is there an existing issue for this?

• [X] I have searched the existing issues

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Description

With the introduction of Bring Your Own IP Address (BYOIP) to Azure https://docs.microsoft.com/en-gb/azure/virtual-network/ip-services/custom-ip-address-prefix it should be possible to specify the desired public IP when a creating a public IP address from a public IP prefix.

At the moment the ip_address after creation is exported, but it’s not possible to set this as an argument.

Using Azure CLI this can be achieved with:

az network public-ip create -g example -n myPublicIpAddress --zone 1 2 3 --ip-address 1.2.3.4 --sku Standard --public-ip-prefix myIpPrefix

One thing I've noticed is that using the CLI, if you don't specify the public-ip-prefix the public-ip is still created, but using a random MS IP address. So there probably needs to be some validation that a public_ip_prefix_id has also been set if ip_address is specified.

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

azurerm_public_ip

Potential Terraform Configuration

resource "azurerm_public_ip" "myIp" {
  name                = "myPublicIpAddress"
  location            = azurerm_resource_group.example.location
  resource_group_name = azurerm_resource_group.example.name
  allocation_method   = "Static"
  zones               = [1,2,3]
  sku                 = "Standard"
  public_ip_prefix_id = azurerm_public_ip_prefix.example.id
  ip_address          = "1.2.3.4"
}

References

No response

[wcarty]

Checking to see if there is any update.

[pollier]

Hello,

This issue has been open for some time, and it's causing significant challenges for us. Could you please provide an update on the progress of supporting specific IP allocation from a prefix via Terraform?

In the meantime, can you suggest any workarounds to achieve this functionality until the feature is implemented?

Thank you for your support!