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En este documento se describe cómo configurar y usar políticas de servidor DNS64 con redes de nube privada virtual (VPC).
Antes de empezar
Las políticas de servidor DNS64 no se aplican a las instancias de máquina virtual de pila dual, a las instancias de máquina virtual solo IPv4, a las cargas de trabajo sin servidor ni a las solicitudes enviadas a los endpoints creados por una política de servidor DNS entrante.
Asegúrate de que tienes los permisos necesarios para crear una política de servidor DNS64.
Permisos que se necesitan para completar esta tarea
Para realizar esta tarea, debes tener los siguientes permisos o los siguientes roles de gestión de identidades y accesos.
Permisos
dns.policies.create para crear una política de servidor DNS64
dns.policies.delete para eliminar una política de servidor DNS64
dns.policies.get para obtener la configuración actual de una política de servidor DNS64
dns.policies.list para mostrar todas las políticas de servidor DNS asociadas a un proyecto
dns.policies.update para actualizar una política de servidor DNS64
dns.managedZones.list para enumerar las zonas gestionadas
Roles
Administrador de DNS (roles/dns.admin)
Crear una política de servidor DNS64
Crea una política de servidor DNS64 para habilitar la comunicación entre cargas de trabajo solo IPv6 y destinos solo IPv4.
Después de crear una política de servidor DNS64, ocurre lo siguiente cuando se consulta un registro IPv6 (AAAA):
Si existe un registro AAAA de DNS, el servidor DNS devuelve una dirección IPv6. Tu carga de trabajo se conecta mediante esa dirección IPv6.
Si no existe ningún registro DNS AAAA, Cloud DNS busca registros A.
A continuación, Cloud DNS crea direcciones IPv6 para las direcciones IPv4 del registro A mediante el prefijo IPv6 64:ff9b::/96.
Para crear una política de servidor DNS64, sigue estos pasos.
NETWORK_URL: la URL completa de la red VPC a la que debe enlazarse tu política de servidor DNS, con el siguiente formato: https://www.googleapis.com/compute/v1/projects/PROJECT_ID/global/networks/VPC_NETWORK_NAME.
Especifica la red que contiene las subredes e instancias solo IPv6.
Verificar si una política de servidor DNS64 está habilitada
gcloud
Para ver una lista de todas las políticas de servidor DNS de tu proyecto, ejecuta el comando dns policies list:
gcloud dns policies list
Para obtener información detallada sobre una política de servidor DNS64 específica, ejecuta el comando gcloud dns policies describe:
gcloud dns policies describe NAME
Sustituye NAME por el nombre de la política del servidor DNS64 sobre la que quieras obtener información detallada.
Inhabilitar una política de servidor DNS64
gcloud
Para inhabilitar una política de servidor DNS64, ejecuta el comando dns policies update:
gcloud dns policies update NAME \
--no-enable-dns64-all-queries
Sustituye NAME por el nombre de la política del servidor DNS64 que quieras inhabilitar.
Siguientes pasos
Para configurar NAT64 para la traducción de NAT pública de direcciones IPv6 a IPv4, sigue las instrucciones que se indican en el artículo Crear una pasarela Cloud NAT.
Para obtener una descripción general de las políticas de servidor DNS, consulta Políticas de servidor DNS.
Para encontrar soluciones a los problemas habituales que pueden surgir al usar Cloud DNS, consulta el artículo Solucionar problemas de Cloud DNS.
[[["Es fácil de entender","easyToUnderstand","thumb-up"],["Me ofreció una solución al problema","solvedMyProblem","thumb-up"],["Otro","otherUp","thumb-up"]],[["Es difícil de entender","hardToUnderstand","thumb-down"],["La información o el código de muestra no son correctos","incorrectInformationOrSampleCode","thumb-down"],["Me faltan las muestras o la información que necesito","missingTheInformationSamplesINeed","thumb-down"],["Problema de traducción","translationIssue","thumb-down"],["Otro","otherDown","thumb-down"]],["Última actualización: 2025-08-21 (UTC)."],[[["\u003cp\u003eThis document details the configuration and usage of DNS64 server policies within Virtual Private Cloud (VPC) networks, enabling communication between IPv6-only workloads and IPv4-only destinations.\u003c/p\u003e\n"],["\u003cp\u003eDNS64 server policies are used to translate IPv4 addresses to IPv6 addresses when an \u003ccode\u003eAAAA\u003c/code\u003e DNS record does not exist for the queried domain, using the \u003ccode\u003e64:ff9b::/96\u003c/code\u003e IPv6 prefix.\u003c/p\u003e\n"],["\u003cp\u003eCreating a DNS64 server policy requires specific permissions, including \u003ccode\u003edns.policies.create\u003c/code\u003e, \u003ccode\u003edns.policies.delete\u003c/code\u003e, \u003ccode\u003edns.policies.get\u003c/code\u003e, \u003ccode\u003edns.policies.list\u003c/code\u003e, and \u003ccode\u003edns.policies.update\u003c/code\u003e, or the DNS Administrator role.\u003c/p\u003e\n"],["\u003cp\u003eDNS64 server policies can be managed using the \u003ccode\u003egcloud\u003c/code\u003e command-line tool or the \u003ccode\u003epolicies.create\u003c/code\u003e API, where you can create, verify, and disable the policy as needed.\u003c/p\u003e\n"],["\u003cp\u003ePre-GA products and features, like the ones described, are available "as is," might have limited support, and are subject to the "Pre-GA Offerings Terms" in the General Service Terms.\u003c/p\u003e\n"]]],[],null,["# Configure DNS64\n\nThis document describes how to configure and use DNS64 server policies with\nVirtual Private Cloud (VPC) networks.\n\nBefore you begin\n----------------\n\n- DNS64 server policies don't apply to dual-stack virtual machine (VM) instances, IPv4-only VM instances, serverless workloads, or requests sent to endpoints created by an [inbound DNS server\n policy](/dns/docs/server-policies-overview#dns-server-policy-in).\n- Make sure that you have the required permissions to create a DNS64 server policy.\n\n#### Permissions required for this task\n\nTo perform this task, you must have been granted the following permissions\n*or* the following IAM roles.\n\n**Permissions**\n\n- `dns.policies.create` to create a DNS64 server policy\n- `dns.policies.delete` to delete a DNS64 server policy\n- `dns.policies.get` to fetch the current configuration of a DNS64 server policy\n- `dns.policies.list` to list all DNS server policies associated with a project\n- `dns.policies.update` to update a DNS64 server policy\n- `dns.managedZones.list` to list managed zones\n\n**Roles**\n\n- DNS Administrator (`roles/dns.admin`)\n\nCreate a DNS64 server policy\n----------------------------\n\nCreate a DNS64 server policy to enable communication between IPv6-only\nworkloads and IPv4-only destinations.\n\nAfter you create a DNS64 server policy, the following occurs when\nan IPv6 (`AAAA`) record is queried:\n\n- If an `AAAA` DNS record exists, the DNS server returns an IPv6 address. Your workload connects by using that IPv6 address.\n- If no `AAAA` DNS record exists, Cloud DNS looks for `A` records. Cloud DNS then creates IPv6 addresses for the IPv4 addresses in the `A` record, by using the `64:ff9b::/96` IPv6 prefix.\n\nTo create a DNS64 server policy, follow these steps. \n\n### gcloud\n\nTo create a DNS64 server policy, run the [`gcloud dns policies\ncreate` command](/sdk/gcloud/reference/dns/policies/create): \n\n```\ngcloud dns policies create NAME \\\n --description=DESCRIPTION \\\n --networks=VPC_NETWORK_LIST \\\n --enable-dns64-all-queries\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003eNAME\u003c/var\u003e: a name for the policy\n- \u003cvar translate=\"no\"\u003eDESCRIPTION\u003c/var\u003e: a description for the policy\n- \u003cvar translate=\"no\"\u003eVPC_NETWORK_LIST\u003c/var\u003e: a comma-delimited list of VPC networks that the DNS server policy binds to\n\n### Terraform\n\n```\nresource \"google_dns_policy\" \"default\" {\n name = \"NAME\"\n\n dns64_config {\n scope {\n all_queries = true\n }\n }\n\n alternative_name_server_config {\n target_name_servers {\n ipv4_address = \"PRIVATE_IP_ADDRESS\"\n forwarding_path = \"private\"\n }\n target_name_servers {\n ipv4_address = \"PUBLIC_IP_ADDRESS\"\n }\n }\n\n networks {\n network_url = google_compute_network.default.id\n }\n}\n\nresource \"google_compute_network\" \"default\" {\n name = \"network\"\n auto_create_subnetworks = false\n}\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003eNAME\u003c/var\u003e: a name for the outbound DNS64 policy\n- \u003cvar translate=\"no\"\u003ePRIVATE_IP_ADDRESS\u003c/var\u003e: the IP address of an alternative name server using a private forwarding path\n- \u003cvar translate=\"no\"\u003ePUBLIC_IP_ADDRESS\u003c/var\u003e: the IP address of a different alternative name server\n\n### API\n\nTo create a DNS64 server policy, use the\n[`policies.create` method](/dns/docs/reference/rest/v1/policies/create): \n\n```\nPOST https://dns.googleapis.com/dns/v1/projects/PROJECT_ID/policies\n{\n \"kind\": \"dns#policy\",\n \"networks\": [\n {\n \"kind\": \"dns#policyNetwork\",\n \"networkUrl\": \"NETWORK_URL\"\n }\n ],\n \"dns64Config\":\n {\n \"scope\":\n {\n allQueries: true,\n }\n }\n }\n```\n\nReplace the following:\n\n- \u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e: your project ID.\n- \u003cvar translate=\"no\"\u003eNETWORK_URL\u003c/var\u003e: the fully qualified URL of the VPC network that your DNS server policy must bind to, formatted as follows: `https://www.googleapis.com/compute/v1/projects/`\u003cvar translate=\"no\"\u003ePROJECT_ID\u003c/var\u003e`/global/networks/`\u003cvar translate=\"no\"\u003eVPC_NETWORK_NAME\u003c/var\u003e. Specify the network that contains the IPv6-only subnets and instances.\n\nVerify if a DNS64 server policy is enabled\n------------------------------------------\n\n### gcloud\n\nTo list all DNS server policies in your project, run the\n[`dns policies list` command](/sdk/gcloud/reference/dns/policies/list): \n\n```\ngcloud dns policies list\n```\n\nTo get detailed information about a specific DNS64 server policy, run the\n[`gcloud dns policies describe` command](/sdk/gcloud/reference/dns/policies/describe): \n\n```\ngcloud dns policies describe NAME\n```\n\nReplace \u003cvar translate=\"no\"\u003eNAME\u003c/var\u003e with the name of the DNS64 server\npolicy about which you want detailed information.\n\nDisable a DNS64 server policy\n-----------------------------\n\n### gcloud\n\nTo disable a DNS64 server policy, run the [`dns policies update` command](/sdk/gcloud/reference/dns/policies/update): \n\n```\ngcloud dns policies update NAME \\\n --no-enable-dns64-all-queries\n```\n\nReplace \u003cvar translate=\"no\"\u003eNAME\u003c/var\u003e with the name of the DNS64 server\npolicy that you want to disable.\n\nWhat's next\n-----------\n\n- To configure NAT64 for Public NAT translation from IPv6 to IPv4 addresses, follow the instructions in [Create a Cloud NAT gateway](/nat/docs/set-up-manage-network-address-translation#create-nat-gateway).\n- To get an overview of DNS server policies, see [DNS server policies](/dns/docs/server-policies-overview).\n- To find solutions for common issues that you might encounter when using Cloud DNS, see [Troubleshoot Cloud DNS](/dns/docs/troubleshooting)."]]
