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ARP request with unicast MAC?

Last updated on February 19, 2023

        Regarding ARP requests, I got to believe that the destination MAC address was in all situations the broadcast address.

Yet I got across this Wireshark capture:

ARP wireshark capture

I just cannot understand the 3rd request from my router. Why is the destination MAC address of the request set to my NIC and not as broadcast? The last ARP request from the router is exactly how I would assume it to be (i.e., using the broadcast MAC address)

(.1 is a router, .100 my PC, .103 second PC)

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