Man/arpsend.8
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NAME
arpsend − send ARP requests
SYNOPSIS
arpsend < -U -i source_ip | -D -e target_ip [-e target_ip] ... > [-c count] [-w timeout] interface
DESCRIPTION
Utility arpsend sends ARP packets on device interface to detect or update neighbours’ ARP caches with a given IP.
COMMANDS
Run 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.
DIAGNOSTICS
arpsend
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
EXAMPLES
To 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
NOTES
Interface 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).
SEE ALSO
LICENSE
Copyright (C) 2000-2011, Parallels, Inc. Licensed under GNU GPL.