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Cilium
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Networking

Which Cilium resource tells nodes to answer ARP requests for LoadBalancer Service IPs on the local network?

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Answer: CiliumL2AnnouncementPolicy

Explanation

A CiliumL2AnnouncementPolicy selects which Services are announced, from which nodes and on which interfaces, and the elected node answers ARP (or NDP) for their IPs. A CiliumLoadBalancerIPPool only allocates the addresses; without an announcement policy, nothing on the LAN can reach them.

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