===== Question ===== How can I update the private traffic prefixes (e.g., 100.64.0.0/12) for Azure Virtual Hub Routing Intent with Terraform?

===== Answer ===== The azurerm_virtual_hub_routing_intent resource supports logical destinations like PrivateTraffic but not individual CIDR blocks. You must update these prefixes manually using Azure CLI, REST API, or azapi.

=== Azure CLI ===

  bash
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  az network vhub routing-intent update \
    --name example-routing-intent \
    --resource-group example-resource-group \
    --vhub-name example-hub \
    --set privateTrafficPrefixes="[10.0.0.0/8, 172.16.0.0/12, 192.168.0.0/16, 100.64.0.0/12]"

=== Terraform with AzAPI ===

terraform
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  resource "azapi_update_resource" "routing_intent" {
    type       = "Microsoft.Network/virtualHubs/routingIntent@2022-01-01"
    name       = "example-routing-intent"
    parent_id  = "/subscriptions/${data.azurerm_client_config.current.subscription_id}/resourceGroups/example-resource-group/providers/Microsoft.Network/virtualHubs/example-hub"
    body = jsonencode({
      properties = {
        privateTrafficPrefixes = [
          "10.0.0.0/8",
          "172.16.0.0/12",
          "192.168.0.0/16",
          "100.64.0.0/12"
        ]
      }
    })
  }