# VpcAttachmentOptions
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Options for attaching a VPC to pipeline.

## Contents
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 ** AttachToVpc **   <a name="opensearchservice-Type-osis_VpcAttachmentOptions-AttachToVpc"></a>
Whether a VPC is attached to the pipeline.  
Type: Boolean  
Required: Yes

 ** CidrBlock **   <a name="opensearchservice-Type-osis_VpcAttachmentOptions-CidrBlock"></a>
The CIDR block to be reserved for OpenSearch Ingestion to create elastic network interfaces (ENIs).  
Type: String  
Pattern: `^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)/(3[0-2]|[12]?[0-9])$`   
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/osis-2022-01-01/VpcAttachmentOptions) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/osis-2022-01-01/VpcAttachmentOptions) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/osis-2022-01-01/VpcAttachmentOptions)