update vm initialization

terraform/proxmox/vm/main.tf

@@ -43,7 +43,8 @@ resource "proxmox_virtual_environment_vm" "vm" {
   initialization {
   ip_config {
     ipv4 {
-        address = "dhcp"
+      address = var.use_dhcp ? "dhcp" : "${var.ip_address}/${var.subnet_mask}"
+      gateway = var.use_dhcp ? null : var.gateway
     }
   }