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 ARP replies are dropped silently when using shared network with vmxnet3

William Tang's profile image
William Tang posted Jul 06, 2025 01:09 PM

I'm experimenting k8s cilium CNI's L2 load balancer, it will respond VIP's ARP requests, I can confirm the node with VIP is working:

01:06:00.855454 ens160 Out ARP, Reply 192.168.63.16 is-at ae:26:ae:26:ae:23, length 1508

But another VM receives nothing with arping:

arping 192.168.63.16

Is this a limitation of the VMware's shared network with vmxnet3? It seems the e1000e driver is working.