# SubnetIpv6CidrBlockAssociation


Describes an association between a subnet and an IPv6 CIDR block.

## Contents


 ** associationId **   
The ID of the association.  
Type: String  
Required: No

 ** ipSource **   
The source that allocated the IP address space. `byoip` or `amazon` indicates public IP address space allocated by Amazon or space that you have allocated with Bring your own IP (BYOIP). `none` indicates private space.  
Type: String  
Valid Values: `amazon | byoip | none`   
Required: No

 ** ipv6AddressAttribute **   
Public IPv6 addresses are those advertised on the internet from AWS. Private IP addresses are not and cannot be advertised on the internet from AWS.  
Type: String  
Valid Values: `public | private`   
Required: No

 ** ipv6CidrBlock **   
The IPv6 CIDR block.  
Type: String  
Required: No

 ** ipv6CidrBlockState **   
The state of the CIDR block.  
Type: [SubnetCidrBlockState](API_SubnetCidrBlockState.md) object  
Required: No

## See Also


For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/SubnetIpv6CidrBlockAssociation) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/SubnetIpv6CidrBlockAssociation) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/SubnetIpv6CidrBlockAssociation)