fix dynamic private ip

modules/host/main.tf

@@ -12,11 +12,6 @@ resource "hcloud_server" "server" {
 
   labels = var.labels
 
-  network {
-    network_id = var.network_id
-    ip         = try(var.ip, null)
-  }
-
   connection {
     user           = "root"
     private_key    = local.ssh_private_key
@@ -68,3 +63,8 @@ resource "hcloud_server" "server" {
     ]
   }
 }
+
+resource "hcloud_server_network" "server" {
+  server_id  = hcloud_server.server.id
+  network_id = var.network_id
+}

modules/host/out.tf

@@ -3,7 +3,7 @@ output "ipv4_address" {
 }
 
 output "private_ipv4_address" {
-  value = var.ip
+  value = hcloud_server_network.server.ip
 }
 
 output "name" {

modules/host/variables.tf

@@ -59,13 +59,6 @@ variable "network_id" {
   type        = number
 }
 
-variable "ip" {
-  default     = null
-  description = "The IP"
-  type        = string
-  nullable    = true
-}
-
 variable "server_type" {
   description = "The server type"
   type        = string