Is there an existing issue for this?

• I have searched the existing issues

Version

equal or higher than v1.17.0 and lower than v1.18.0

What happened?

enableNeighDiscovery isn't initialized at the time this code is called and migrateOnly is always false. As a result, the managed neigh entries are being deleted. NodeConfigurationChanged callback initializes enableNeighDiscovery but it hasn't been called when the daemon calls NodeCleanNeighbors.

This causes connection disruption when the XDP acceleration is enabled.

How can we reproduce the issue?

Restart a cilium-agent Pod.

Cilium Version

v1.17 (main branch)

Kernel Version

Linux 320 6.8.0-52-generic #53~22.04.1-Ubuntu SMP PREEMPT_DYNAMIC Wed Jan 15 19:18:46 UTC 2 x86_64 x86_64 x86_64 GNU/Linux

Kubernetes Version

v1.32.1

Regression

No response

Sysdump

No response

Relevant log output

Anything else?

No response

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