Add explanation for Pod IP addresses.

terraform/modules/cluster/main.tf

@@ -72,7 +72,12 @@ variable "cluster_exists" {
 variable "routes_based" {
   description = "Set to true to create a routes-based cluster instead of VPC Native. This is mostly for testing."
   type        = bool
-  default     = true
+  default     = false
+}
+
+variable "enable_snat" {
+  description = "Whether we should enable source network address translation to the node IP address."
+  type        = bool
 }
 
 output "gke_connect_command" {

terraform/modules/cluster/workload.tf

@@ -35,5 +35,6 @@ module "workload" {
   dns_managed_zone                       = var.dns_managed_zone
   public_ingress                         = var.public_ingress
   ingress_type                           = var.ingress_type
+  enable_snat                            = var.enable_snat
   main_k8s_namespace                     = var.main_k8s_namespace
 }