Cloud DNS managed zone: allow forwarding to IPv6 address (#15512)

Author: LucaPrete

mmv1/products/dns/ManagedZone.yaml

@@ -62,7 +62,7 @@ examples:
   - name: 'dns_managed_zone_basic'
     primary_resource_id: 'example-zone'
     external_providers: ["random", "time"]
-      # Randomness from random provider
+    # Randomness from random provider
     skip_vcr: true
   - name: 'dns_managed_zone_private'
     primary_resource_id: 'private-zone'
@@ -89,6 +89,11 @@ examples:
       network_1_name: 'network-1'
       network_2_name: 'network-2'
     exclude_test: true
+  - name: 'dns_managed_zone_private_forwarding_ipv6'
+    primary_resource_id: 'private-zone'
+    vars:
+      zone_name: 'private-zone'
+      network_1_name: 'network-1'
   - name: 'dns_managed_zone_private_gke'
     primary_resource_id: 'private-zone-gke'
     vars:
@@ -357,21 +362,32 @@ properties:
           properties:
             - name: 'ipv4Address'
               type: String
-              description: 'IPv4 address of a target name server.'
+              description: |
+                IPv4 address of a target name server.
+                Does not accept both fields (ipv4 & ipv6) being populated.
+            - name: 'ipv6Address'
+              type: String
+              description: |
+                IPv6 address of a target name server.
+                Does not accept both fields (ipv4 & ipv6) being populated.
             - name: 'domainName'
               type: String
-              description: 'Fully qualified domain name for the forwarding target.'
+              description: |
+                Fully qualified domain name for the forwarding target.
             - name: 'forwardingPath'
               type: Enum
               description: |
-                Forwarding path for this TargetNameServer. If unset or `default` Cloud DNS will make forwarding
-                decision based on address ranges, i.e. RFC1918 addresses go to the VPC, Non-RFC1918 addresses go
-                to the Internet. When set to `private`, Cloud DNS will always send queries through VPC for this target
+                Forwarding path for this TargetNameServer. If unset or `default`
+                Cloud DNS will make forwarding decision based on address ranges,
+                i.e. RFC1918 addresses go to the VPC, Non-RFC1918 addresses go
+                to the Internet. When set to `private`, Cloud DNS will always
+                send queries through VPC for this target.
               enum_values:
                 - 'default'
                 - 'private'
           exactly_one_of:
             - 'ipv4_address'
+            - 'ipv6_address'
             - 'domain_name'
   - name: 'peeringConfig'
     type: NestedObject

mmv1/templates/terraform/examples/dns_managed_zone_private_forwarding_ipv6.tf.tmpl

@@ -0,0 +1,23 @@
+resource "google_dns_managed_zone" "{{$.PrimaryResourceId}}" {
+  name        = "{{index $.Vars "zone_name"}}"
+  dns_name    = "private.example.com."
+  description = "Example private DNS zone"
+  visibility  = "private"
+
+  private_visibility_config {
+    networks {
+      network_url = google_compute_network.network_1.id
+    }
+  }
+
+  forwarding_config {
+    target_name_servers {
+      ipv6_address = "fd20:3e9:7a70:680d:0:8::"
+    }
+  }
+}
+
+resource "google_compute_network" "network_1" {
+  name                    = "{{index $.Vars "network_1_name"}}"
+  auto_create_subnetworks = false
+}