/usr/local/bin/arping: invalid option -- '-'

Usage:
  arping [options] <destination>

Options:
  -f            quit on first reply
  -q            be quiet
  -b            keep on broadcasting, do not unicast
  -D            duplicate address detection mode
  -U            unsolicited ARP mode, update your neighbours
  -A            ARP answer mode, update your neighbours
  -V            print version and exit
  -c <count>    how many packets to send
  -w <timeout>  how long to wait for a reply
  -i <interval> set interval between packets (default: 1 second)
  -I <device>   which ethernet device to use
  -s <source>   source IP address
  <destination> DNS name or IP address

For more details see arping(8).