Network commands
ARP Ping - check duplicate IP address
Use this command to see if two devices respond with the same IP address on the network (use correct device address in place of 10.1.2.3).
arping -D -I eth1 10.1.2.3 -w 5
Use this command to see if two devices respond with the same IP address on the network (use correct device address in place of 10.1.2.3).
arping -D -I eth1 10.1.2.3 -w 5