{AKS} udpate description for --pod-cidr and --pod-cidrs

[robogatikov]

---

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[azure-client-tools-bot-prd]

️✔️Azure CLI Extensions Breaking Change Test

️✔️Non Breaking Changes

[azure-client-tools-bot-prd]

Hi @robogatikov,
Please write the description of changes which can be perceived by customers into HISTORY.rst.
If you want to release a new extension version, please update the version in setup.py as well.

[yonzhan]

Thank you for your contribution! We will review the pull request and get back to you soon.

[github-actions]

The git hooks are available for azure-cli and azure-cli-extensions repos. They could help you run required checks before creating the PR.

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[Copilot]

Pull Request Overview

This PR enhances the help text for the --pod-cidr and --pod-cidrs flags in the AKS preview extension to reference the new Azure CNI Overlay mode and Kubenet’s planned retirement.

• Updated short and long summaries for --pod-cidr to include Azure CNI Overlay context and Kubenet deprecation date.
• Mirrored those changes for --pod-cidrs, adding a link to the Azure CNI Overlay docs.
• Added aka.ms/aks/azure-cni-overlay reference in both long summaries.

Comments suppressed due to low confidence (2)

src/aks-preview/azext_aks_preview/_help.py:243

• [nitpick] Consider moving the Kubenet retirement note out of the short-summary into the long-summary for clarity, and adjust casing for consistency (e.g., lowercase 'kubenet' to match existing entries and use lowercase 'on' within parentheses).

          short-summary: A CIDR notation IP range from which to assign pod IPs when Azure CNI Overlay or Kubenet is used (On 31 March 2028, Kubenet will be retired).

src/aks-preview/azext_aks_preview/_help.py:255

• [nitpick] As above, consider relocating the retirement note to the long-summary and normalizing casing (e.g., lowercase 'kubenet' and 'on') to improve readability and consistency across help entries.

          short-summary: A comma-separated list of CIDR notation IP ranges from which to assign pod IPs when Azure CNI Overlay or Kubenet is used (On 31 March 2028, Kubenet will be retired).

[github-actions]

Hi @robogatikov

Release Suggestions

Module: aks-preview

• Please log updates into to src/aks-preview/HISTORY.rst
• Update VERSION to 18.0.0b16 in src/aks-preview/setup.py

Notes

• For more info about extension versioning, please refer to Extension version schema

[tyler-lloyd]

LGTM