CHANGELOG.md in aws-sdk-ec2-1.285.0 vs CHANGELOG.md in aws-sdk-ec2-1.286.0

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 Unreleased Changes
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+1.286.0 (2021-12-01)
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+
+* Feature - This release adds support for Amazon VPC IP Address Manager (IPAM), which enables you to plan, track, and monitor IP addresses for your workloads. This release also adds support for VPC Network Access Analyzer, which enables you to analyze network access to resources in your Virtual Private Clouds.
+
 1.285.0 (2021-11-30)
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 * Feature - This release adds support for Is4gen and Im4gn instances. This release also adds a new subnet attribute, enableLniAtDeviceIndex, to support local network interfaces, which are logical networking components that connect an EC2 instance to your on-premises network.
 
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