NAMEarpsend - utility to send ARP requests.
SYNOPSISarpsend < -U -i source_ip | -D -e target_ip [-e target_ip] ... > [-c count] [-w timeout] interface
DESCRIPTIONUtility arpsend sends ARP packets on device interface to detect or update neighbours' ARP caches with a given IP.
COMMANDSRun utility with one of the following commands: -D Send broadcast ARP request to detect neighbours with target_ip. You have to specify target_ip (-e option). -U Send broadcast ARP request to update neighbours' ARP caches with source_ip. You have to specify source_ip (-i option).
OPTIONS-c count Number of packets to send. Default is infinity. -w interval Interval between packets, in seconds. Default is 1 second. -i source_ip_address Set source IP address field in ARP packet. -e target_ip_address Set target IP address field in ARP packet. Note that you can specify -e option multiple times to detect many IP addresses in one utility call.
DIAGNOSTICSarpsend returns 0 upon successful execution. If something goes wrong, it returns an appropriate error code. 1 EXC_USAGE Usage error 2 EXC_SYSTEM System error 3 EXC_RECV ARP reply was received
EXAMPLESTo send request on interface eth0 to detect any neighbour computers with IP 192.168.10.200: arpsend -D -e 192.168.10.200 eth0 To send request on interface eth0 to update neighbours' ARP caches with IP 192.168.10.200: arpsend -U -i 192.168.10.200 eth0
NOTESInterface you use have to be arpable and not be loopback (i.e. /sbin/ip link show interface should show neither NOARP not LOOPBACK flags in interface parameters).
LICENSECopyright (C) 2000-2011, Parallels, Inc. Licensed under GNU GPL. ARPSEND(8)