# AssignNetworkInterfaceIpv6

## 1. API Description

This API (AssignNetworkInterfaceIpv6) is used to assign IPv6 to the vNIC.

{% hint style="info" %} <mark style="color:blue;">**Note**</mark>

* <mark style="color:blue;">vNIC state must be</mark> <mark style="color:blue;">`AVAILABLE`</mark> <mark style="color:blue;">or</mark> <mark style="color:blue;">`USED`</mark><mark style="color:blue;">.</mark>
* <mark style="color:blue;">The vNIC stack type must be</mark> <mark style="color:blue;">`IPv4`</mark><mark style="color:blue;">, and the associated subnet stack type must be</mark> <mark style="color:blue;">`IPv4_IPv6`</mark><mark style="color:blue;">.</mark>
  {% endhint %}

## 2. Input Parameters

The following request parameter list only provides API request parameters.

| Parameter Name     | Required | Type                                                                                                           | Description                                                                                                                                                                                                                         |
| ------------------ | -------- | -------------------------------------------------------------------------------------------------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| nicId              | Yes      | String                                                                                                         | ID of the vNIC.                                                                                                                                                                                                                     |
| internetChargeType | No       | [InternetChargeType](https://docs.console.zenlayer.com/api-reference/compute/datastructure#internetchargetype) | <p>Network billing model.</p><p>See InternetChargeType for available values.</p><p>If the subnet stack type is IPv4\_IPv6 and the IPv6 access type is Public , this value is required.</p>                                          |
| bandwidth          | No       | Integer                                                                                                        | <p>Outbound public network bandwidth cap (Mbps). Unit: Mbps.</p><p>The value differs with different instance types.</p><p>Value range: \[1, +)</p>                                                                                  |
| packageSize        | No       | Float                                                                                                          | <p>Traffic package size (TB). The unit is TB.</p><p>This value takes effect only when internetChargeType is set to ByTrafficPackage .</p><p>The default value is 0 . Maximum of one decimal place.</p><p>Value range: \[0.0, +)</p> |
| clusterId          | No       | String                                                                                                         | <p>The ID of the bandwidth cluster assigned to the public IPv6.</p><p>This parameter must be specified when the subnet's stack type includes public IPv6, and the network billing model is <code>BandwidthCluster</code>.</p>       |

## 3. Output Parameters

| Parameter Name | Type   | Description                                                                                                           |
| -------------- | ------ | --------------------------------------------------------------------------------------------------------------------- |
| requestId      | String | <p>The unique request ID, which is returned for each request.</p><p>RequestId is required for locating a problem.</p> |

## 4. Code Example

{% tabs %}
{% tab title="Example" %}
**Assign IPv6 to the vNIC.**

<pre class="language-json"><code class="lang-json"><strong>POST /api/v2/zec HTTP/1.1
</strong>Host: console.zenlayer.com
Content-Type: application/json
X-ZC-Action: AssignNetworkInterfaceIpv6


Request:
{
  "nicId": "XXX",
  "internetChargeType": "ByTrafficPackage",
  "packageSize": 10
}

Response:
{
  "requestId": "TBFC01FCF-6439-4530-ADBC-16809F0C3E8F",
  "response": {
    "requestId": "TBFC01FCF-6439-4530-ADBC-16809F0C3E8F"
  }
}
</code></pre>

{% endtab %}
{% endtabs %}

## 5. Developer Resources

Zenlayer Cloud API 2.0 integrates [SDKs](https://docs.console.zenlayer.com/api-reference/api-introduction/toolkit/api-sdk)，to make it easier for you to call APIs. More programming languages will be supported.

## 6. Error Codes

The following only lists the error codes related to the API business logic. For other error codes, see [Common Error Codes](https://docs.console.zenlayer.com/api-reference/api-introduction/instruction/commonerrorcode).

| HTTP Status Code | Error Code                                              | Description                                               |
| ---------------- | ------------------------------------------------------- | --------------------------------------------------------- |
| 400              | INVALID\_NIC\_IPV6\_EXISTS                              | vNIC already has an IPv6 assigned; operation not allowed. |
| 404              | INVALID\_NIC\_NOT\_FOUND                                | vNIC does not exist.                                      |
| 400              | INVALID\_NIC\_STATUS                                    | Current vNIC state does not allow this operation.         |
| 400              | INVALID\_PARAMETER\_BANDWIDTH\_ERROR                    | Bandwidth size is below the minimum limit.                |
| 400              | INVALID\_PARAMETER\_BANDWIDTH\_EXCEED                   | Bandwidth size exceeds the upper limit.                   |
| 400              | INVALID\_PARAMETER\_FLOW\_TRAFFIC\_PACKAGE              | Data transfer package size is invalid.                    |
| 400              | INVALID\_PARAMETER\_TRAFFIC\_PACKAGE\_EXCEED            | Data traffic package exceeds the maximum limit.           |
| 400              | INVALID\_SUBNET\_IPSTACK\_NOT\_SUPPORT                  | Subnet IP stack type not supported.                       |
| 409              | INVALID\_SUBNET\_IPV6\_INSUFFICIENT                     | Insufficient available IPv6 addresses in the subnet.      |
| 400              | OPERATION\_DENIED\_INTERNET\_CHARGE\_TYPE\_NOT\_SUPPORT | IP network billing type is not supported.                 |
| 400              | OPERATION\_DENIED\_NIC\_EXIST\_IPV6                     | The vNIC already IPv6 assigned.                           |