diff --git a/main.tf b/main.tf
index 6b43e3f..26b23cd 100644
--- a/main.tf
+++ b/main.tf
@@ -13,8 +13,7 @@ locals {
   # The RFC 6052 "well known" NAT64 CIDR
   nat64_cidr = "64:ff9b::/96"
 
-  # In case we later decide to compute it
-  vpc_id = var.vpc_id
+  vpc_id = one(data.aws_vpc.default[*].id)
 
   #####################################################################
   ## Determine the set of availability zones in which to deploy subnets
@@ -271,7 +270,9 @@ data "aws_availability_zones" "default" {
 data "aws_vpc" "default" {
   count = local.need_vpc_data ? 1 : 0
 
-  id = local.vpc_id
+  id = var.vpc_id
+
+  tags = var.vpc_id
 }
 
 data "aws_eip" "nat" {
diff --git a/variables.tf b/variables.tf
index 6eb2e21..79ed848 100644
--- a/variables.tf
+++ b/variables.tf
@@ -1,6 +1,13 @@
 variable "vpc_id" {
   type        = string
   description = "VPC ID where subnets will be created (e.g. `vpc-aceb2723`)"
+  default     = null
+}
+
+variable "vpc_tags" {
+  type        = map(string)
+  description = "VPC tags to get the VPC ID where subnets will be created"
+  default     = null
 }
 
 variable "igw_id" {