# arping > Discover and probe hosts in a network using the ARP protocol. > Useful for MAC address discovery. > More information: . - Ping a host by ARP request packets: `sudo arping {{host_ip}}` - Ping a host on a specific [I]nterface: `sudo arping -I {{interface}} {{host_ip}}` - Ping a host and [f]inish after the first reply: `sudo arping -f {{host_ip}}` - Ping a host a specific number ([c]ount) of times: `sudo arping -c {{count}} {{host_ip}}` - Broadcast ARP request packets to update neighbours' ARP caches ([U]nsolicited ARP mode): `sudo arping -U {{ip_to_broadcast}}` - [D]etect duplicated IP addresses in the network by sending ARP requests with a 3 second timeout: `sudo arping -D -w {{3}} {{ip_to_check}}`