add description for detail interface announce arp

[changluyi]

Summary by CodeRabbit

• Documentation
  • Enhanced networking configuration documentation with detailed guidance on configuring optional interface selectors for IP address pools. Added recommendations and configuration examples for using bridge interfaces instead of physical interfaces to ensure proper ARP broadcasting behavior in Underlay IP pool setups.

[coderabbitai]

Walkthrough

A documentation update to the MetalLB Underlay configuration guide adds an optional interfaces block to the L2Advertisement specification, demonstrating the use of br-provider as a bridge interface for ARP broadcasting.

Changes

Cohort / File(s)	Summary
MetalLB Underlay Configuration Guide docs/en/configure/networking/how_to/kube_ovn/config_metallb_underlay.mdx	Added interfaces block under spec.ipAddressPools in L2Advertisement configuration with br-provider example and guidance on using bridge interfaces instead of physical interfaces.

Estimated code review effort

🎯 1 (Trivial) | ⏱️ ~2 minutes

Possibly related PRs

• config metallb underlay #415: Modifies the same MetalLB/Kube-OVN how-to document and introduces the L2Advertisement configuration that this PR extends with interface selectors.

Suggested reviewers

• fanzy618

Poem

🐰 A bridge here, a pool there,
L2 whispers float through the air,
br-provider shows the way,
For underlay networks to play!
~CodeRabbit

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Description Check	✅ Passed	Check skipped - CodeRabbit’s high-level summary is enabled.
Title check	✅ Passed	The title accurately describes the main change: adding interface configuration details for MetalLB ARP announcement in Underlay networking.
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.

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✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Post copyable unit tests in a comment

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[coderabbitai]

🧹 Nitpick comments (1)

docs/en/configure/networking/how_to/kube_ovn/config_metallb_underlay.mdx (1)

1-3: File and directory naming should use kebab-case.

The file name config_metallb_underlay.mdx and parent directory how_to use underscores instead of kebab-case. Per coding guidelines, these should be config-metallb-underlay.mdx and how-to respectively.

Since this is an existing file, this may require coordinating the rename with any internal links or navigation configurations that reference the current path.

As per coding guidelines: "Use kebab-case for all MDX file and directory names"

🤖 Prompt for AI Agents

Verify each finding against the current code and only fix it if needed.

In `@docs/en/configure/networking/how_to/kube_ovn/config_metallb_underlay.mdx`
around lines 1 - 3, Rename the MDX file config_metallb_underlay.mdx to
config-metallb-underlay.mdx and rename its parent directory how_to to how-to,
then update all references that point to the old path (internal links in other
MDX files, import/include paths, and navigation/sidebar config entries) to use
the new kebab-case path; ensure any tooling or CI/docs config that lists the old
path is updated and coordinate the rename so links/redirects are preserved
during deployment.

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Nitpick comments:
In `@docs/en/configure/networking/how_to/kube_ovn/config_metallb_underlay.mdx`:
- Around line 1-3: Rename the MDX file config_metallb_underlay.mdx to
config-metallb-underlay.mdx and rename its parent directory how_to to how-to,
then update all references that point to the old path (internal links in other
MDX files, import/include paths, and navigation/sidebar config entries) to use
the new kebab-case path; ensure any tooling or CI/docs config that lists the old
path is updated and coordinate the rename so links/redirects are preserved
during deployment.

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ℹ️ Review info

Run configuration

Configuration used: Organization UI

Review profile: CHILL

Plan: Pro

Run ID: 0449e9af-44f2-4c71-8aac-f39ddbb787a0

📥 Commits

Reviewing files that changed from the base of the PR and between 52d9507 and ba1e90b.

📒 Files selected for processing (1)

• docs/en/configure/networking/how_to/kube_ovn/config_metallb_underlay.mdx