# ModifyVpnConnectionOptions
<a name="API_ModifyVpnConnectionOptions"></a>

Modifies the connection options for your Site-to-Site VPN connection.

When you modify the VPN connection options, the VPN endpoint IP addresses on the Amazon side do not change, and the tunnel options do not change. Your VPN connection will be temporarily unavailable for a brief period while the VPN connection is updated.

## Request Parameters
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The following parameters are for this specific action. For more information about required and optional parameters that are common to all actions, see [Common Query Parameters](CommonParameters.md).

 **DryRun**   
Checks whether you have the required permissions for the action, without actually making the request, and provides an error response. If you have the required permissions, the error response is `DryRunOperation`. Otherwise, it is `UnauthorizedOperation`.  
Type: Boolean  
Required: No

 **LocalIpv4NetworkCidr**   
The IPv4 CIDR on the customer gateway (on-premises) side of the VPN connection.  
Default: `0.0.0.0/0`   
Type: String  
Required: No

 **LocalIpv6NetworkCidr**   
The IPv6 CIDR on the customer gateway (on-premises) side of the VPN connection.  
Default: `::/0`   
Type: String  
Required: No

 **RemoteIpv4NetworkCidr**   
The IPv4 CIDR on the Amazon side of the VPN connection.  
Default: `0.0.0.0/0`   
Type: String  
Required: No

 **RemoteIpv6NetworkCidr**   
The IPv6 CIDR on the Amazon side of the VPN connection.  
Default: `::/0`   
Type: String  
Required: No

 **VpnConnectionId**   
The ID of the Site-to-Site VPN connection.   
Type: String  
Required: Yes

## Response Elements
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The following elements are returned by the service.

 **requestId**   
The ID of the request.  
Type: String

 **vpnConnection**   
Information about the VPN connection.  
Type: [VpnConnection](API_VpnConnection.md) object

## Errors
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For information about the errors that are common to all actions, see [Common client error codes](errors-overview.md#CommonErrors).

## See Also
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For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon Command Line Interface V2](https://docs.amazonaws.cn/goto/cli2/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for .NET V4](https://docs.amazonaws.cn/goto/DotNetSDKV4/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for Go v2](https://docs.amazonaws.cn/goto/SdkForGoV2/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for JavaScript V3](https://docs.amazonaws.cn/goto/SdkForJavaScriptV3/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for Kotlin](https://docs.amazonaws.cn/goto/SdkForKotlin/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for PHP V3](https://docs.amazonaws.cn/goto/SdkForPHPV3/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for Python](https://docs.amazonaws.cn/goto/boto3/ec2-2016-11-15/ModifyVpnConnectionOptions) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/ModifyVpnConnectionOptions)