a

main.tf

@@ -120,7 +120,7 @@ resource "aws_route_table" "quortex_private" {
 
   # Route to the NAT, if NAT is enabled...
   dynamic "route" {
-    for_each = lookup(local.zoned_gateway_ids, each.value.availability_zone, null) != null ? [1] : []
+    for_each = lookup(local.zoned_gateway_ids, each.value.availability_zone, "") != "" ? [1] : []
     iterator = nat_route
 
     content {
@@ -131,7 +131,7 @@ resource "aws_route_table" "quortex_private" {
 
   # ...otherwise, route to the Internet Gateway
   dynamic "route" {
-    for_each = lookup(local.zoned_gateway_ids, each.value.availability_zone, null) != null ? [] : [1]
+    for_each = lookup(local.zoned_gateway_ids, each.value.availability_zone, "") != "" ? [] : [1]
     iterator = igw_route
 
     content {
@@ -140,6 +140,26 @@ resource "aws_route_table" "quortex_private" {
     }
   }
 
+  # Additional route(s) to peered VPC
+  dynamic "route" {
+    for_each = var.vpc_peering_routes
+    iterator = peering_route
+    content {
+      cidr_block                = route.value.cidr_block
+      vpc_peering_connection_id = route.value.vpc_peering_connection_id
+    }
+  }
+
+  # Additional route(s) to a VPC internet gateway or a virtual private gateway.
+  dynamic "route" {
+    for_each = var.gateway_routes
+    iterator = gw_route
+    content {
+      cidr_block = route.value.cidr_block
+      gateway_id = route.value.gateway_id
+    }
+  }
+
   tags = merge({ "Name" = "${var.route_table_prefix}${each.key}" }, var.tags)
 }