NAME
    gcloud compute instances update-access-config - update a Compute Engine
        virtual machine access configuration

SYNOPSIS
    gcloud compute instances update-access-config INSTANCE_NAME
        [--network-interface=NETWORK_INTERFACE; default="nic0"] [--zone=ZONE]
        [--no-ipv6-public-ptr
          | --ipv6-public-ptr-domain=IPV6_PUBLIC_PTR_DOMAIN]
        [--public-ptr | --no-public-ptr]
        [--public-ptr-domain=PUBLIC_PTR_DOMAIN | --no-public-ptr-domain]
        [GCLOUD_WIDE_FLAG ...]

DESCRIPTION
    gcloud compute instances update-access-config is used to update access
    configurations for network interfaces of Compute Engine virtual machines.

EXAMPLES
    To update network interface of an instance to 'nic0', run:

        $ gcloud compute instances update-access-config example-instance \
            --network-interface=nic0 --zone=us-central1-b

POSITIONAL ARGUMENTS
     INSTANCE_NAME
        Name of the instance to operate on. For details on valid instance
        names, refer to the criteria documented under the field 'name' at:
        https://cloud.google.com/compute/docs/reference/rest/v1/instances

FLAGS
     --network-interface=NETWORK_INTERFACE; default="nic0"
        Specifies the name of the network interface which contains the access
        configuration. If this is not provided, then "nic0" is used as the
        default.

     --zone=ZONE
        Zone of the instance to operate on. If not specified, you might be
        prompted to select a zone (interactive mode only). gcloud attempts to
        identify the appropriate zone by searching for resources in your
        currently active project. If the zone cannot be determined, gcloud
        prompts you for a selection with all available Google Cloud Platform
        zones.

        To avoid prompting when this flag is omitted, the user can set the
        compute/zone property:

            $ gcloud config set compute/zone ZONE

        A list of zones can be fetched by running:

            $ gcloud compute zones list

        To unset the property, run:

            $ gcloud config unset compute/zone

        Alternatively, the zone can be stored in the environment variable
        CLOUDSDK_COMPUTE_ZONE.

     At most one of these can be specified:

       --no-ipv6-public-ptr
          If provided, the default DNS PTR record will replace the existing one
          for external IPv6 in the IPv6 access configuration. Mutually
          exclusive with ipv6-public-ptr-domain.

       --ipv6-public-ptr-domain=IPV6_PUBLIC_PTR_DOMAIN
          Assigns a custom PTR domain for the external IPv6 in the access
          configuration. Mutually exclusive with no-ipv6-public-ptr. This
          option can only be specified for the default network interface, nic0.

     At most one of these can be specified:

       --public-ptr
          Creates a DNS PTR record for the external IP in the access
          configuration. This option can only be specified for the default
          network-interface, "nic0".

       --no-public-ptr
          If provided, no DNS PTR record is created for the external IP in the
          access configuration. Mutually exclusive with public-ptr-domain.

     At most one of these can be specified:

       --public-ptr-domain=PUBLIC_PTR_DOMAIN
          Assigns a custom PTR domain for the external IP in the access
          configuration. Mutually exclusive with no-public-ptr. This option can
          only be specified for the default network-interface, "nic0".

       --no-public-ptr-domain
          If both this flag and --public-ptr are specified, creates a DNS PTR
          record for the external IP in the access configuration with the PTR
          domain name being the DNS name of the instance.

GCLOUD WIDE FLAGS
    These flags are available to all commands: --access-token-file, --account,
    --billing-project, --configuration, --flags-file, --flatten, --format,
    --help, --impersonate-service-account, --log-http, --project, --quiet,
    --trace-token, --user-output-enabled, --verbosity.

    Run $ gcloud help for details.

NOTES
    These variants are also available:

        $ gcloud alpha compute instances update-access-config

        $ gcloud beta compute instances update-access-config