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 ethX:

sudo ip {{[n|neighbour]}} {{[f|flush]}} dev {{ethX}}

• Perform a neighbour lookup and return a neighbour entry:

ip {{[n|neighbour]}} {{[g|get]}} {{lookup_ip}} dev {{ethX}}

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

sudo ip {{[n|neighbour]}} {{add|delete}} {{ip_address}} lladdr {{mac_address}} dev {{ethX}} nud reachable

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

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