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Elastic Compute Service:UnassignIpv6Addresses

Last Updated:Apr 11, 2024

Unassign one or more IPv6 addresses from an elastic network interface (ENI).

Operation description

When you call this operation, take note of the following items:

  • The ENI must be in the Available (Available) or InUse (InUse) state.
  • If the ENI is a primary ENI, the Elastic Compute Service (ECS) instance to which the ENI is attached must be in the Running (Running) or Stopped (Stopped) state.


OpenAPI Explorer automatically calculates the signature value. For your convenience, we recommend that you call this operation in OpenAPI Explorer.

Authorization information

There is currently no authorization information disclosed in the API.

Request parameters


The region ID of the ENI. You can call the DescribeRegions operation to query the most recent region list.


The ID of the ENI.


The IPv6 addresses to unassign. You can specify up to 10 IPv6 addresses in a single request.


The IPv6 address.

Note This parameter is in invitational preview and is unavailable for general users.
Note This parameter is in invitational preview and is unavailable for general users.

Response parameters


The ID of the request.



Sample success responses


  "RequestId": "473469C7-AA6F-4DC5-B3DB-A3DC0DE3C83E"

Error codes

HTTP status codeError codeError messageDescription
400UnsupportedParameter%sThe parameter is not supported.
400InvalidParameter%sThe specified parameter is invalid.
400InvalidInstanceID.Malformed%sThe specified InstanceId parameter is invalid.
400MissingParameter%sA parameter is not specified.
400InvalidEniId.MalformedThe specified parameter "EniId" is not valid.-
400InvalidParameter.Conflict%sThe specified parameter is invalid. Check whether parameter conflicts exist. %s is a variable. An error message is dynamically returned based on call conditions.
403InvalidUserType.NotSupported%sYour account does not support this operation.
403Abs.InvalidAccount.NotFound%sYour Alibaba Cloud account does not exist or your AccessKey pair has expired.
403Forbedden.NotSupportRAM%sRAM users are not authorized to perform this operation.
403Forbbiden.SubUser%sYou are not authorized to manage this resource. Contact the owner of the Alibaba Cloud account for authorization.
403InvalidIp.IpUnassigned%sThe specified IP address is not assigned.
403InvalidIp.IpRepeated%sThe specified IP address already exists.
403Forbidden.RegionId%sThe service is unavailable in the current region.
403InvalidOperation.EniServiceManaged%sThe operation is invalid.
403InvalidIp.IpPrefixIllegalThe ip prefixes %s is/are illegal.The IP address prefix is invalid and is not in the CIDR format.
403InvalidIp.IpPrefixMaskInvalidThe ip prefixes mask %s is illegal which must be between %s and %s.The IP address prefix mask is invalid and is not within the valid range.
403InvalidIp.IpPrefixMaskNotSameThe ip prefixes %s are illegal which mask must be same.The IP address prefix masks are not the same.
403InvalidIp.IpPrefixNotStrictThe ip prefix must be strict cidr format.The IP address prefix is invalid and is not in the CIDR format.
403MissingParameterThese parameters %s cannot be both empty.A required parameter is not specified. The required parameters cannot be empty.
404InvalidEniId.NotFound%sThe specified ENI ID does not exist.
500InvalidOperation.RegionNotSupportIpPrefixThe current region does not support ip prefix.You cannot assign IP address prefixes in this region.

For a list of error codes, visit the Service error codes.

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