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by MauranKilom 1427 days ago
So maybe I misunderstood the article, but I would expect that (assuming my router is on 192.168.0.123) that

  ping 192.168.0.123
followed by

  arp -a 192.168.0.123
should tell me the MAC address of the router. But instead I get "No ARP entries found." - what's going on here?