feat: add default support for MTU auto-detection in Debian 12 enX interfaces

[joseluisgonzalezca]

Description

With Debian 12 release, interfaces were renamed to enX. Current regular expression is not able to match those interfaces unless it's explicitly modified in the configuration parameters. This warning is shown in Calico in that case:

...
Failed to auto-detect host MTU - no interfaces matched the MTU interface pattern
...

With this PR, we are able to provide native support for this kind of interfaces without any changes in configuration parameters.

Related issues/PRs

No related issues

Todos

• Tests
• Documentation
• Release note

Release Note

Include enX interfaces in MTU auto-detection by default

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[CLAassistant]

All committers have signed the CLA.

[caseydavenport]

@joseluisgonzalezca thanks for the PR!

This LGTM, but you'll need to sign the CLA to make the bot happy.

[joseluisgonzalezca]

Sorry about that. Though I have signed it. Now it should be done.

[coutinhop]

/sem-approve

[coutinhop]

@joseluisgonzalezca could you run make generate and commit the changes? our preflight check failed because of it...

[github-actions]

This PR is stale because it has been open for 60 days with no activity.

[nathanael-h]

Hello, I faced this exact issue today while running microk8s with calico on top of XCP-ng, and was going to report in issue and start a PR. But maybe this one could be enough. Do you think I can help to see it merged? I certainly do not have the permission to write to the branch joseluisgonzalezca:master so the only way I see would be me forking this and run the make generate as requested by @coutinhop ; but not sure it would be OK. Anyway, I'd like to help to see this fixed upstream 🤝