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General discussion • arp -a differences

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I have one RPI3+ on bookworm avahi 0.8-10
arp -a shows 7 entries with names

Code:

pi@RPI3:~ $ arp -a -vmijnmodem.kpn (192.168.2.254) at a4:22:49:74:69:f0 [ether] on eth0server.home (192.168.2.14) at 1c:69:7a:c9:2f:5f [ether] on eth0homeassistant.home (192.168.2.159) at d8:3a:dd:08:c2:1b [ether] on eth0
the other RPI4 2G on bullseye avahi 0.8--5
arp -a sows 15 entries, no names but ? on the name position

Code:

pi@RPI4-2:~$ arp -a -v? (192.168.2.51) at 80:64:6f:82:9b:c4 [ether] on eth0? (192.168.2.52) at 80:64:6f:81:80:db [ether] on eth0
Both after sudo ip -s -s neigh flush all

Question: how do I get these names instead of ?

Statistics: Posted by HvdW — Sun Mar 16, 2025 10:46 am



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