Add internal ipv6 prefix into compute network and subnetwork data source reference attribute

.changelog/9274.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+compute: added `internal_ipv6_range` to `data.google_compute_network` data source and `internal_ipv6_prefix` field to `data.google_compute_subnetwork` data source
+```

google/services/compute/data_source_google_compute_network.go

@@ -30,6 +30,11 @@ func DataSourceGoogleComputeNetwork() *schema.Resource {
 				Computed: true,
 			},
 
+			"internal_ipv6_range": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+
 			"self_link": {
 				Type:     schema.TypeString,
 				Computed: true,
@@ -71,6 +76,9 @@ func dataSourceGoogleComputeNetworkRead(d *schema.ResourceData, meta interface{}
 	if err := d.Set("gateway_ipv4", network.GatewayIPv4); err != nil {
 		return fmt.Errorf("Error setting gateway_ipv4: %s", err)
 	}
+	if err := d.Set("internal_ipv6_range", network.InternalIpv6Range); err != nil {
+		return fmt.Errorf("Error setting internal_ipv6_range: %s", err)
+	}
 	if err := d.Set("self_link", network.SelfLink); err != nil {
 		return fmt.Errorf("Error setting self_link: %s", err)
 	}

google/services/compute/data_source_google_compute_network_test.go

@@ -48,6 +48,7 @@ func testAccDataSourceGoogleNetworkCheck(data_source_name string, resource_name
 			"id",
 			"name",
 			"description",
+			"internal_ipv6_range",
 		}
 
 		for _, attr_to_check := range network_attrs_to_test {
@@ -72,8 +73,10 @@ func testAccDataSourceGoogleNetworkCheck(data_source_name string, resource_name
 func testAccDataSourceGoogleNetworkConfig(name string) string {
 	return fmt.Sprintf(`
 resource "google_compute_network" "foobar" {
-  name        = "%s"
-  description = "my-description"
+  name                     = "%s"
+  description              = "my-description"
+  enable_ula_internal_ipv6 = true
+  auto_create_subnetworks  = false
 }
 
 data "google_compute_network" "my_network" {

google/services/compute/data_source_google_compute_subnetwork.go

@@ -33,6 +33,10 @@ func DataSourceGoogleComputeSubnetwork() *schema.Resource {
 				Type:     schema.TypeString,
 				Computed: true,
 			},
+			"internal_ipv6_prefix": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
 			"private_ip_google_access": {
 				Type:     schema.TypeBool,
 				Computed: true,
@@ -97,6 +101,9 @@ func dataSourceGoogleComputeSubnetworkRead(d *schema.ResourceData, meta interfac
 	if err := d.Set("ip_cidr_range", subnetwork.IpCidrRange); err != nil {
 		return fmt.Errorf("Error setting ip_cidr_range: %s", err)
 	}
+	if err := d.Set("internal_ipv6_prefix", subnetwork.InternalIpv6Prefix); err != nil {
+		return fmt.Errorf("Error setting internal_ipv6_prefix: %s", err)
+	}
 	if err := d.Set("private_ip_google_access", subnetwork.PrivateIpGoogleAccess); err != nil {
 		return fmt.Errorf("Error setting private_ip_google_access: %s", err)
 	}

google/services/compute/data_source_google_compute_subnetwork_test.go

@@ -51,6 +51,7 @@ func testAccDataSourceGoogleSubnetworkCheck(data_source_name string, resource_na
 			"description",
 			"ip_cidr_range",
 			"private_ip_google_access",
+			"internal_ipv6_prefix",
 			"secondary_ip_range",
 		}
 
@@ -82,13 +83,17 @@ func testAccDataSourceGoogleSubnetwork(networkName, subnetName string) string {
 resource "google_compute_network" "foobar" {
   name        = "%s"
   description = "my-description"
+  enable_ula_internal_ipv6 = true
+  auto_create_subnetworks = false
 }
 
 resource "google_compute_subnetwork" "foobar" {
   name                     = "%s"
   description              = "my-description"
   ip_cidr_range            = "10.0.0.0/24"
   network                  = google_compute_network.foobar.self_link
+  stack_type               = "IPV4_IPV6"
+  ipv6_access_type         = "INTERNAL"
   private_ip_google_access = true
   secondary_ip_range {
     range_name    = "tf-test-secondary-range"

website/docs/d/compute_network.html.markdown

@@ -38,6 +38,8 @@ In addition to the arguments listed above, the following attributes are exported
 
 * `gateway_ipv4` - The IP address of the gateway.
 
+* `internal_ipv6_range` - The ula internal ipv6 range assigned to this network.
+
 * `subnetworks_self_links` - the list of subnetworks which belong to the network
 
 * `self_link` - The URI of the resource.

website/docs/d/compute_subnetwork.html.markdown

@@ -45,6 +45,8 @@ In addition to the arguments listed above, the following attributes are exported
 * `ip_cidr_range` - The IP address range that machines in this
     network are assigned to, represented as a CIDR block.
 
+* `internal_ipv6_prefix` - The internal IPv6 address range that is assigned to this subnetwork.
+
 * `gateway_address` - The IP address of the gateway.
 
 * `private_ip_google_access` - Whether the VMs in this subnet