add azurerm_virtual_network_dns_servers resource block

main.tf

@@ -29,6 +29,13 @@ resource "azurerm_virtual_network" "vnet" {
   }
 }
 
+resource "azurerm_virtual_network_dns_servers" "this" {
+  count = var.dns_servers != null ? 1 : 0
+
+  virtual_network_id = azurerm_virtual_network.vnet.id
+  dns_servers        = var.dns_servers
+}
+
 moved {
   from = azurerm_subnet.subnet
   to   = azurerm_subnet.subnet_count

variables.tf

@@ -31,6 +31,13 @@ variable "ddos_protection_plan" {
   description = "The set of DDoS protection plan configuration"
 }
 
+# If no values specified, this defaults to Azure DNS
+variable "dns_servers" {
+  type        = list(string)
+  default     = []
+  description = "The DNS servers to be used with vNet."
+}
+
 variable "nsg_ids" {
   type = map(string)
   default = {