AWS SDK Version 3 for .NET
API Reference

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Releases the specified Elastic IP address.

[EC2-Classic, default VPC] Releasing an Elastic IP address automatically disassociates it from any instance that it's associated with. To disassociate an Elastic IP address without releasing it, use DisassociateAddress.

[Nondefault VPC] You must use DisassociateAddress to disassociate the Elastic IP address before you can release it. Otherwise, Amazon EC2 returns an error (InvalidIPAddress.InUse).

After releasing an Elastic IP address, it is released to the IP address pool. Be sure to update your DNS records and any servers or devices that communicate with the address. If you attempt to release an Elastic IP address that you already released, you'll get an AuthFailure error if the address is already allocated to another AWS account.

[EC2-VPC] After you release an Elastic IP address for use in a VPC, you might be able to recover it. For more information, see AllocateAddress.

Note:

For PCL this operation is only available in asynchronous form. Please refer to ReleaseAddressAsync.

Namespace: Amazon.EC2
Assembly: AWSSDK.EC2.dll
Version: 3.x.y.z

Syntax

C#
public virtual ReleaseAddressResponse ReleaseAddress(
         ReleaseAddressRequest request
)
Parameters
request
Type: Amazon.EC2.Model.ReleaseAddressRequest

Container for the necessary parameters to execute the ReleaseAddress service method.

Return Value
The response from the ReleaseAddress service method, as returned by EC2.

Examples

This example releases an Elastic IP address for use with instances in a VPC.

To release an Elastic IP address for EC2-VPC


var response = client.ReleaseAddress(new ReleaseAddressRequest 
{
    AllocationId = "eipalloc-64d5890a"
});


            

This example releases an Elastic IP address for use with instances in EC2-Classic.

To release an Elastic IP addresses for EC2-Classic


var response = client.ReleaseAddress(new ReleaseAddressRequest 
{
    PublicIp = "198.51.100.0"
});


            

Version Information

.NET Framework:
Supported in: 4.5, 4.0, 3.5

Portable Class Library:
Supported in: Windows Store Apps
Supported in: Windows Phone 8.1
Supported in: Xamarin Android
Supported in: Xamarin iOS (Unified)
Supported in: Xamarin.Forms

See Also