feat: it works

terraform/main.tf

@@ -12,7 +12,14 @@ resource "hcloud_network_subnet" "subnet" {
   type         = "cloud"
   network_id   = hcloud_network.net.id
   network_zone = "eu-central"
-  ip_range     = "10.0.0.0/16"
+  ip_range     = "10.0.0.0/24"
+}
+
+resource "hcloud_network_route" "routes" {
+  for_each = var.routing
+  network_id  = hcloud_network.net.id
+  destination = each.value.from
+  gateway     = each.value.to
 }
 
 resource "hcloud_server" "boxes" {

terraform/variables.tf

@@ -12,4 +12,11 @@ variable "boxes" {
   type = map(object({
     private_ip = string
   }))
+}
+
+variable "routing" {
+  type = map(object({
+    from = string
+    to = string
+  }))
 }