Updates an instance's network interface. This method can only update an interface's alias IP range and attached network. See Modifying alias IP ranges for an existing instance for instructions on changing alias IP ranges. See Migrating a VM between networks for instructions on migrating an interface. This method follows PATCH semantics.


You will need authorization for at least one of the following scopes to make a valid call:

  • https://www.googleapis.com/auth/cloud-platform
  • https://www.googleapis.com/auth/compute

If unset, the scope for this method defaults to https://www.googleapis.com/auth/cloud-platform. You can set the scope for this method like this: compute1 --scope <scope> instances update-network-interface ...

Required Scalar Arguments

  • <project> (string)
    • Project ID for this request.
  • <zone> (string)
    • The name of the zone for this request.
  • <instance> (string)
    • The instance name for this request.
  • <network-interface> (string)
    • The name of the network interface to update.

Required Request Value

The request value is a data-structure with various fields. Each field may be a simple scalar or another data-structure. In the latter case it is advised to set the field-cursor to the data-structure's field to specify values more concisely.

For example, a structure like this:

  fingerprint: string
  internal-ipv6-prefix-length: integer
  ipv6-access-type: string
  ipv6-address: string
  kind: string
  name: string
  network: string
  network-attachment: string
  network-ip: string
  nic-type: string
  queue-count: integer
  stack-type: string
  subnetwork: string

can be set completely with the following arguments which are assumed to be executed in the given order. Note how the cursor position is adjusted to the respective structures, allowing simple field names to be used most of the time.

  • -r . fingerprint=ipsum
    • Fingerprint hash of contents stored in this network interface. This field will be ignored when inserting an Instance or adding a NetworkInterface. An up-to-date fingerprint must be provided in order to update the NetworkInterface. The request will fail with error 400 Bad Request if the fingerprint is not provided, or 412 Precondition Failed if the fingerprint is out of date.
  • internal-ipv6-prefix-length=15
    • The prefix length of the primary internal IPv6 range.
  • ipv6-access-type=accusam
    • [Output Only] One of EXTERNAL, INTERNAL to indicate whether the IP can be accessed from the Internet. This field is always inherited from its subnetwork. Valid only if stackType is IPV4_IPV6.
  • ipv6-address=amet
    • An IPv6 internal network address for this network interface. To use a static internal IP address, it must be unused and in the same region as the instance's zone. If not specified, Google Cloud will automatically assign an internal IPv6 address from the instance's subnetwork.
  • kind=amet.
    • [Output Only] Type of the resource. Always compute#networkInterface for network interfaces.
  • name=consetetur
    • [Output Only] The name of the network interface, which is generated by the server. For a VM, the network interface uses the nicN naming format. Where N is a value between 0 and 7. The default interface value is nic0.
  • network=clita
    • URL of the VPC network resource for this instance. When creating an instance, if neither the network nor the subnetwork is specified, the default network global/networks/default is used. If the selected project doesn't have the default network, you must specify a network or subnet. If the network is not specified but the subnetwork is specified, the network is inferred. If you specify this property, you can specify the network as a full or partial URL. For example, the following are all valid URLs: - https://www.googleapis.com/compute/v1/projects/project/global/networks/ network - projects/project/global/networks/network - global/networks/default
  • network-attachment=amet.
    • The URL of the network attachment that this interface should connect to in the following format: projects/{project_number}/regions/{region_name}/networkAttachments/{network_attachment_name}.
  • network-ip=eirmod
    • An IPv4 internal IP address to assign to the instance for this network interface. If not specified by the user, an unused internal IP is assigned by the system.
  • nic-type=no
    • The type of vNIC to be used on this interface. This may be gVNIC or VirtioNet.
  • queue-count=11
    • The networking queue count that's specified by users for the network interface. Both Rx and Tx queues will be set to this number. It'll be empty if not specified by the users.
  • stack-type=rebum.
    • The stack type for this network interface. To assign only IPv4 addresses, use IPV4_ONLY. To assign both IPv4 and IPv6 addresses, use IPV4_IPV6. If not specified, IPV4_ONLY is used. This field can be both set at instance creation and update network interface operations.
  • subnetwork=labore
    • The URL of the Subnetwork resource for this instance. If the network resource is in legacy mode, do not specify this field. If the network is in auto subnet mode, specifying the subnetwork is optional. If the network is in custom subnet mode, specifying the subnetwork is required. If you specify this field, you can specify the subnetwork as a full or partial URL. For example, the following are all valid URLs: - https://www.googleapis.com/compute/v1/projects/project/regions/region /subnetworks/subnetwork - regions/region/subnetworks/subnetwork

About Cursors

The cursor position is key to comfortably set complex nested structures. The following rules apply:

  • The cursor position is always set relative to the current one, unless the field name starts with the . character. Fields can be nested such as in -r f.s.o .
  • The cursor position is set relative to the top-level structure if it starts with ., e.g. -r .s.s
  • You can also set nested fields without setting the cursor explicitly. For example, to set a value relative to the current cursor position, you would specify -r struct.sub_struct=bar.
  • You can move the cursor one level up by using ... Each additional . moves it up one additional level. E.g. ... would go three levels up.

Optional Output Flags

The method's return value a JSON encoded structure, which will be written to standard output by default.

  • -o out
    • out specifies the destination to which to write the server's result to. It will be a JSON-encoded structure. The destination may be - to indicate standard output, or a filepath that is to contain the received bytes. If unset, it defaults to standard output.

Optional Method Properties

You may set the following properties to further configure the call. Please note that -p is followed by one or more key-value-pairs, and is called like this -p k1=v1 k2=v2 even though the listing below repeats the -p for completeness.

  • -p request-id=string
    • An optional request ID to identify requests. Specify a unique request ID so that if you must retry your request, the server will know to ignore the request if it has already been completed. For example, consider a situation where you make an initial request and the request times out. If you make the request again with the same request ID, the server can check if original operation with the same request ID was received, and if so, will ignore the second request. This prevents clients from accidentally creating duplicate commitments. The request ID must be a valid UUID with the exception that zero UUID is not supported ( 00000000-0000-0000-0000-000000000000).

Optional General Properties

The following properties can configure any call, and are not specific to this method.

  • -p $-xgafv=string

    • V1 error format.
  • -p access-token=string

    • OAuth access token.
  • -p alt=string

    • Data format for response.
  • -p callback=string

    • JSONP
  • -p fields=string

    • Selector specifying which fields to include in a partial response.
  • -p key=string

    • API key. Your API key identifies your project and provides you with API access, quota, and reports. Required unless you provide an OAuth 2.0 token.
  • -p oauth-token=string

    • OAuth 2.0 token for the current user.
  • -p pretty-print=boolean

    • Returns response with indentations and line breaks.
  • -p quota-user=string

    • Available to use for quota purposes for server-side applications. Can be any arbitrary string assigned to a user, but should not exceed 40 characters.
  • -p upload-type=string

    • Legacy upload protocol for media (e.g. "media", "multipart").
  • -p upload-protocol=string

    • Upload protocol for media (e.g. "raw", "multipart").
  • -p user-ip=string

    • Legacy name for parameter that has been superseded by quotaUser.