root@Thinkpad-2:~# for I in `seq 0 255`;do nping --icmp -c 1 --icmp-type 0 --dest-ip 192.168.1.1 --source-ip 192.168.1.2 --icmp-id 0 --icmp-seq 555 --source-mac 00:0c:29:48:55:$(printf "%x" $I) -e enp0s25;done