POST /#Action=CreateNetworkInterface

Creates a network interface in the specified subnet.

The number of IP addresses you can assign to a network interface varies by instance type. For more information, see IP Addresses Per ENI Per Instance Type in the Amazon Virtual Private Cloud User Guide.

For more information about network interfaces, see Elastic network interfaces in the Amazon Elastic Compute Cloud User Guide.

Servers

https://ec2.{region}.amazonaws.com
https://ec2.amazonaws.com
https://ec2.{region}.amazonaws.com.cn

Request headers

Name	Type	Required	Description
`X-Amz-Content-Sha256`	String	No
`X-Amz-Credential`	String	No
`Content-Type`	String	Yes	The media type of the request body. Default value: "text/xml"
`X-Amz-Date`	String	No
`X-Amz-Algorithm`	String	No
`X-Amz-SignedHeaders`	String	No
`X-Amz-Security-Token`	String	No
`X-Amz-Signature`	String	No

Query parameters

Name Type Required Description

Name	Type	Required	Description
`Version`	String	Yes	Possible values: `"2016-11-15"`
`Action`	String	Yes	Possible values: `"CreateNetworkInterface"`

Version

String

Yes

Possible values:

"2016-11-15"

Action

String

Yes

Possible values:

"CreateNetworkInterface"

Request body fields

Name	Type	Required	Description
`Ipv6Addresses[]`	Array	No	The IPv6 addresses from the IPv6 CIDR block range of your subnet. You can't specify IPv6 addresses using this parameter if you've specified one of the following: a count of IPv6 addresses, specific IPv6 prefixes, or a count of IPv6 prefixes.
`Ipv6AddressCount`	Integer	No	The number of IPv6 addresses to assign to a network interface. Amazon EC2 automatically selects the IPv6 addresses from the subnet range. You can't specify a count of IPv6 addresses using this parameter if you've specified one of the following: specific IPv6 addresses, specific IPv6 prefixes, or a count of IPv6 prefixes. If your subnet has the `AssignIpv6AddressOnCreation` attribute set, you can override that setting by specifying 0 as the IPv6 address count.
`InterfaceType`	String	No	The type of network interface. The default is `interface`. The only supported values are `efa` and `trunk`. Possible values: `"branch"` `"trunk"` `"efa"`
`Groups[]`	Array	No	The IDs of one or more security groups.
`Description`	String	No	A description for the network interface.
`Ipv6Prefixes[]`	Array	No	The IPv6 prefixes assigned to the network interface. You can't specify IPv6 prefixes if you've specified one of the following: a count of IPv6 prefixes, specific IPv6 addresses, or a count of IPv6 addresses.
`PrivateIpAddresses[]`	Array	No	The private IPv4 addresses. You can't specify private IPv4 addresses if you've specified one of the following: a count of private IPv4 addresses, specific IPv4 prefixes, or a count of IPv4 prefixes.
`TagSpecifications[]`	Array	No	The tags to apply to the new network interface.
`ClientToken`	String	No	Unique, case-sensitive identifier that you provide to ensure the idempotency of the request. For more information, see Ensuring Idempotency.
`SecondaryPrivateIpAddressCount`	Integer	No	The number of secondary private IPv4 addresses to assign to a network interface. When you specify a number of secondary IPv4 addresses, Amazon EC2 selects these IP addresses within the subnet's IPv4 CIDR range. You can't specify this option and specify more than one private IP address using `privateIpAddresses`. You can't specify a count of private IPv4 addresses if you've specified one of the following: specific private IPv4 addresses, specific IPv4 prefixes, or a count of IPv4 prefixes.
`PrivateIpAddress`	String	No	The primary private IPv4 address of the network interface. If you don't specify an IPv4 address, Amazon EC2 selects one for you from the subnet's IPv4 CIDR range. If you specify an IP address, you cannot indicate any IP addresses specified in `privateIpAddresses` as primary (only one IP address can be designated as primary).
`Ipv6PrefixCount`	Integer	No	The number of IPv6 prefixes that Amazon Web Services automatically assigns to the network interface. You can't specify a count of IPv6 prefixes if you've specified one of the following: specific IPv6 prefixes, specific IPv6 addresses, or a count of IPv6 addresses.
`Ipv4Prefixes[]`	Array	No	The IPv4 prefixes assigned to the network interface. You can't specify IPv4 prefixes if you've specified one of the following: a count of IPv4 prefixes, specific private IPv4 addresses, or a count of private IPv4 addresses.
`DryRun`	Boolean	No	Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.
`Ipv4PrefixCount`	Integer	No	The number of IPv4 prefixes that Amazon Web Services automatically assigns to the network interface. You can't specify a count of IPv4 prefixes if you've specified one of the following: specific IPv4 prefixes, specific private IPv4 addresses, or a count of private IPv4 addresses.
`SubnetId`	String	Yes	The ID of the subnet to associate with the network interface.

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