anchor.diff:    name          = "ha-vpn-subnet-1"
     ip_cidr_range = "10.0.1.0/24"
     region        = "us-central1"
  -  network       = google_compute_network.network.self_link
  +  network       = google_compute_network.network.id
   }
   
   resource "google_compute_subnetwork" "network_subnet2" {
  
positive.code:   provider = google-beta
    region   = "us-central1"
    name     = "<%= ctx[:vars]['ha_vpn_gateway_name'] %>"
    network  = google_compute_network.network.self_link
  }
  
  resource "google_compute_external_vpn_gateway" "external_gateway" {
  
negative.code:   provider                        = google-beta
    name                            = "ha-vpn-tunnel1"
    region                          = "us-central1"
    vpn_gateway                     = google_compute_ha_vpn_gateway.ha_gateway.id
    peer_external_gateway           = google_compute_external_vpn_gateway.external_gateway.id
    peer_external_gateway_interface = 0
    shared_secret                   = "a secret message"
    router                          = google_compute_router.router1.id
    vpn_gateway_interface           = 0
  }
  
  