arpsend(8)                   Virtual Environments                   arpsend(8)



NAME
       arpsend - utility to 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
       vzctl(8),

LICENSE
       Copyright (C) 2000-2007, SWsoft. Licensed under GNU GPL.



OpenVZ                            12 Sep 2006                       arpsend(8)