Provided by: arping_2.01-3_i386 bug

NAME

       arping - sends arp and/or ip pings to a given host

SYNOPSIS

       arping [-hqavrRd0bp] [-S host/ip] [-T host/ip] [-s MAC]    [-t MAC] [-c
       count] [-i interface] <host | -B>

DESCRIPTION

       The arping utility sends ARP and/or ICMP requests to the specified host
       and  displays  the  replies. The host may be specified by its hostname,
       its IP address, or its MAC address.

       One request is sent each second.

       When pinging an IP an ARP who-has query is sent.  When  pinging  a  MAC
       address  a  directed  broadcast  ICMP  Echo  request  is sent. For more
       technical explaination and an FAQ, see the README file.

       Important note on timing

       ARP packets are usually replied to (on a LAN) so fast that the OS  task
       scheduler  can’t keep up to get exact enough timing.  On an idle system
       the roundtrip times will be pretty much accurate, but  with  more  load
       the timing gets less exact.

       To get more exact timing on a non-idle system, re-nice arping to -15 or
       so.

       # nice -n -15 arping foobar

       This is not just an issue with arping, it is with normal ping also  (at
       least  it  is  on  my system). But it doesn’t show up as much with ping
       since arping packets (when pinging IP) doesn’t traverse  the  IP  stack
       when received and are therefore replied to faster.

OPTIONS

       -0     Use this option to ping with source IP address 0.0.0.0. Use this
              when you haven’t configured your interface yet.  Note that  this
              may  get  the  MAC-ping  unanswered.   This  is  an alias for -S
              0.0.0.0.

       -a     Audiable ping.

       -A     Only count addresses matching  requested  address  (This  *WILL*
              break  most things you do. Only useful if you are arpinging many
              hosts at once. See arping-scan-net.sh for an example).

       -b     Like -0 but source broadcast source  address  (255.255.255.255).
              Note  that  this  may  get  the arping unanswered since it’s not
              normal behavior for a host.

       -B     Use instead of host if you want to address 255.255.255.255.

       -c count
              Only send count requests.

       -d     Find duplicate replies.

       -F     Don’t try to be smart about the interface name.  (even  if  this
              switch is not given, -i overrides smartness.

       -h     Displays a help message and exits.

       -i interface
              Use the specified interface.

       -q     Does not display messages, except error messages.

       -r     Raw output: only the MAC/IP address is displayed for each reply.

       -R     Raw output: Like -r but shows "the other one", can  be  combined
              with -r.

       -s MAC Set source MAC address. You may need to use -p with this.

       -S IP  Like  -b and -0 but with set source address.  Note that this may
              get the arping unanswered if the target does not have routing to
              the  IP.  If you don’t own the IP you are using, you may need to
              turn on promiscious mode on the interface (with -p).  With  this
              switch  you  can  find  out  what  IP-address a host has without
              taking an IP-address yourself.

       -t MAC Set target MAC address to use when pinging IP address.

       -T IP  Use -T as target address when pinging MACs that won’t respond to
              a broadcast ping but perhaps to a directed broadcast.

              Example:
              To check the address of MAC-A, use knowledge of MAC-B and  IP-B.

              $ arping -S <IP-B> -s <MAC-B> -p <MAC-A>

       -p     Turn  on  promiscious  mode  on interface, use this if you don’t
              "own" the MAC address you are using.

       -v     Verbose output. Use twice for more messages.

       -w     (arping 2.x only) Time to wait between pings, in microseconds.

BUGS

       You have to use -B instead of arpinging 255.255.255.255, and -b instead
       of -S 255.255.255.255. This is libnets fault.

SEE ALSO

       ping(8), arp(8), rarp(8)

AUTHOR

       Arping was written by Thomas Habets <thomas@habets.pp.se>.