arping:tldr:2ff6c

The command "arping -D -w ${3} ${ip_to_check}" is an example of the arping command with some options.

• arping is a command-line utility used for sending ARP (Address Resolution Protocol) requests to a specific IP address on a local network.
• The -D option is used to display received ARP replies as well as unanswered ARP requests. It is helpful for debugging purposes.
• The -w ${3} option sets the timeout duration for waiting for a response from the target IP address. The ${3} is a placeholder for a value that needs to be provided, indicating the specific timeout duration.
• ${ip_to_check} is another placeholder for a value that needs to be provided, representing the IP address that needs to be checked.

In summary, this command sends an ARP request to the specified ${ip_to_check} address, waits for a response within the timeout duration ${3}, and displays the received replies and unanswered requests for debugging purposes.