Using Edit-EC2VpcAttribute to modify NAU attribute does not go through.

[siriuschan9]

Describe the bug

When using Edit-EC2VpcAttribute to modify NAU attribute, for example:

Edit-EC2VpcAttribute -EnableNetworkAddressUsageMetric $true vpc-xxxxxxxxxxxxxxxxx

It will complain that the -EnableDnsSupport parameter needs to be provided.

cmdlet Edit-EC2VpcAttribute at command pipeline position 1
Supply values for the following parameters:
EnableDnsSupport:

When I specify the -EnableDnsSupport parameter together, it complains that I cannot specify multiple attributes.

Edit-EC2VpcAttribute -EnableDnsSupport $true -EnableNetworkAddressUsageMetric $true vpc-xxxxxxxxxxxxxxxxx

Edit-EC2VpcAttribute: Fields for multiple attribute types specified: enableDnsSupport, enableNetworkAddressUsageMetrics

This seems to be a bug in the powershell cmdlet because when I use AWS CLI, it will work as expected -i.e. I do not have to specify --enable-dns-support nor no--enable-dns-support.

aws ec2 modify-vpc-attribute --vpc-id vpc-xxxxxxxxxxxxxxxxx --enable-network-address-usage-metrics

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

I expect that when using the Edit-EC2VpcAttribute cmdlet to modify VPC NAU attribute, it should not require the -EnableDnsSupport parameter. According to the documentation, each API call can modify one attribute only.

Current Behavior

The cmdlet will ask for -EnableDnsSupport value when specifying -EnableNetworkAddressUsage parameter.

After -EnableDnsSupport value is provied, it will complain modifying multiple attributes is not allowed.

Reproduction Steps

Edit-EC2VpcAttribute -EnableNetworkAddressUsageMetric $true vpc-xxxxxxxxxxxxxxxxx

Edit-EC2VpcAttribute -EnableDnsSupport $true -EnableNetworkAddressUsageMetric $true vpc-xxxxxxxxxxxxxxxxx

Possible Solution

No response

Additional Information/Context

No response

AWS Tools for PowerShell version used

5.0.83 AWS.Tools.EC2

PowerShell version used

Name Value
---- -----
PSVersion 7.5.4
PSEdition Core
GitCommitId 7.5.4
OS Darwin 24.6.0 Darwin Kernel Version 24.6.0: Mon Jul 14 11:28:17 PDT 2025; root:xnu-11417.140.69~1/RELEASE_X86_64
Platform Unix
PSCompatibleVersions {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion 2.3
SerializationVersion 1.1.0.1
WSManStackVersion 3.0

Operating System and version

MacOS Sequoia 15.6.1

[muhammad-othman]

Thank you for reporting this issue. We've identified the root cause and can confirm this is a bug in our PowerShell module.
You're correct that this behavior differs from the AWS CLI and API. The Edit-EC2VpcAttribute cmdlet should allow modifying individual VPC attributes without requiring other unrelated parameters.
We've found that our code has an incorrect customization that makes the EnableDnsSupport parameter mandatory when it shouldn't be. This conflicts with the AWS API design where each call should modify only one attribute.
We'll work on fixing this in an upcoming release. Until the fix is released, you can use the AWS CLI as you've already discovered