ip-neighbour:tldr:6c353

This command is used to look up the neighbor entry (often referred to as ARP entry) for a specific IP address on a given network interface.

Here's the breakdown of the command:

• ip neighbour get is the main command to retrieve a neighbor entry for a particular IP address.
• ${lookup_ip} is a placeholder for the IP address you want to look up the neighbor entry for. You need to replace ${lookup_ip} with the actual IP address you want to query.
• dev ${eth0} specifies the network interface (in this example, eth0) on which you want to perform the IP neighbor lookup. You need to replace ${eth0} with the desired interface name.

The command essentially queries the Address Resolution Protocol (ARP) cache or Neighbor Cache to find the neighbor entry for the specified IP address on the given network interface. This information is useful to determine the link layer address (MAC address) associated with an IP address on a specific interface.