# SubnetMapping
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Information about a subnet mapping.

## Contents
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 ** AllocationId **   
[Network Load Balancers] The allocation ID of the Elastic IP address for an internet-facing load balancer.  
Type: String  
Required: No

 ** IPv6Address **   
[Network Load Balancers] The IPv6 address.  
Type: String  
Required: No

 ** PrivateIPv4Address **   
[Network Load Balancers] The private IPv4 address for an internal load balancer.  
Type: String  
Required: No

 ** SourceNatIpv6Prefix **   
[Network Load Balancers with UDP listeners] The IPv6 prefix to use for source NAT. Specify an IPv6 prefix (/80 netmask) from the subnet CIDR block or `auto_assigned` to use an IPv6 prefix selected at random from the subnet CIDR block.  
Type: String  
Required: No

 ** SubnetId **   
The ID of the subnet.  
Type: String  
Required: No

## See Also
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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/elasticloadbalancingv2-2015-12-01/SubnetMapping) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/elasticloadbalancingv2-2015-12-01/SubnetMapping) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/elasticloadbalancingv2-2015-12-01/SubnetMapping)