permanent fix

Author: drewmullen

variables.tf

@@ -192,10 +192,10 @@ EOF
     condition     = alltrue([for _, v in var.subnets : !can(regex("/", try(v.name_prefix, "")))])
   }
 
-  # validation {
-  #   error_message = "Private subnet cannot set `route_to_transit_gateway` = \"0.0.0.0/.\" if `route_to_nat` = true."
-  #   condition     = try(var.subnets.private.route_to_nat, false) ? try(var.subnets.private.route_to_transit_gateway[0] != "0.0.0.0/0", true) : null
-  # }
+  validation {
+    error_message = "Private subnet cannot set `route_to_transit_gateway` = \"0.0.0.0/.\" if `route_to_nat` = true."
+    condition     = try(var.subnets.private.route_to_nat, false) ? try(var.subnets.private.route_to_transit_gateway[0] != "0.0.0.0/0", true) : true
+  }
 
   # TODO: remove once `route_to_transit_gateway` can accept more than 1 argument
   validation {