ip neighbour

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

• Display the neighbour/ARP table entries:

ip {{[n|neighbour]}}

• Remove entries in the neighbour table on device eth0:

sudo ip {{[n|neighbour]}} flush dev {{eth0}}

• Perform a neighbour lookup and return a neighbour entry:

ip {{[n|neighbour]}} get {{lookup_ip}} dev {{eth0}}

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

sudo ip {{[n|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 {{[n|neighbour]}} {{change|replace}} {{ip_address}} lladdr {{new_mac_address}} dev {{eth0}}