Custom Azure APIPA BGP IP address

bgp_settings block in azurerm_virtual_network_gateway sets value “Default Azure BGP peer IP address”. I can’t find a field that will populate “Custom Azure APIPA BGP IP address”.

resource "azurerm_virtual_network_gateway" "vnet_gw" {
  name                = "${var.prefix}-vnet-gw"
  location            = azurerm_resource_group.rg.location
  resource_group_name = azurerm_resource_group.rg.name
  type                = "Vpn"
  sku                 = "VpnGw1"
  vpn_type            = "RouteBased"
  enable_bgp          = true

  bgp_settings {
    asn             = 65515
    peering_address = var.bgp_azure_interface_ip_0
  }
  ip_configuration {
    name                          = "${var.prefix}-vnetGatewayConfig"
    public_ip_address_id          = azurerm_public_ip.gw_public_ip.id
    private_ip_address_allocation = "Dynamic"
    subnet_id                     = azurerm_subnet.gw_subnet.id
  }
  tags = var.labels
}