arping

ARP ping

low risk

interactive breakdown — edit the command and press Explain
$ 
What it does

Test L2 reachability or detect duplicate IPs.

Examples
arping -c 3 -I eth0 192.168.1.1Probe · explain & risk-check →
Related
ping ip
Open the full explainer →More in Networking

Reference text is hand-written and may be incomplete — check man arping for your version. Test destructive commands on a non-production system first.