ARP
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# tcpdump -e -p arp -n -vv
21:08:10.329163 00:16:3e:01:79:43 > ff:ff:ff:ff:ff:ff, ethertype ARP (0x0806), length 42: Ethernet (len 6), IPv4 (len 4), Request who-has 192.168.14.23 tell 192.168.13.43, length 28
21:08:10.329626 00:16:3e:01:7b:17 > 00:16:3e:01:79:43, ethertype ARP (0x0806), length 60: Ethernet (len 6), IPv4 (len 4), Reply 192.168.14.23 is-at 00:16:3e:01:7b:17, length 46