ip neighbour

Neighbour/ARP tables management IP subcommand. More information: https://manned.org/ip-neighbour.8.

• Display the neighbour/ARP table entries:

ip neighbour

• Remove entries in the neighbour table on device eth0:

sudo ip neighbour flush dev eth0

• Perform a neighbour lookup and return a neighbour entry:

ip neighbour get lookup_ip dev eth0

• Add or delete an ARP entry for the neighbour IP address to eth0:

sudo ip neighbour add|del ip_address lladdr mac_address dev eth0 nud reachable

• Change or replace an ARP entry for the neighbour IP address to eth0:

sudo ip neighbour change|replace ip_address lladdr new_mac_address dev eth0