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Net::Packet::ARP(3) User Contributed Perl Documentation Net::Packet::ARP(3)

Net::Packet::ARP - Address Resolution Protocol layer 3 object

   use Net::Packet::Consts qw(:arp);
   require Net::Packet::ARP;

   # Build a layer
   my $layer = Net::Packet::ARP->new(
      dstIp => "192.168.0.1",
   );
   $layer->pack;

   print 'RAW: '.unpack('H*', $layer->raw)."\n";

   # Read a raw layer
   my $layer = Net::Packet::ARP->new(raw => $raw);

   print $layer->print."\n";
   print 'PAYLOAD: '.unpack('H*', $layer->payload)."\n"
      if $layer->payload;

This modules implements the encoding and decoding of the ARP layer.

RFC: ftp://ftp.rfc-editor.org/in-notes/rfc826.txt

See also Net::Packet::Layer and Net::Packet::Layer3 for other attributes and methods.

hType
pType
Hardware and protocol address types.
hSize
pSize
Hardware and protocol address sizes in bytes.
opCode
The operation code number to perform.
src
dst
Source and destination hardware addresses.
srcIp
dstIp
Source and destination IP addresses.

new
Object constructor. You can pass attributes that will overwrite default ones. Default values:

hType: NP_ARP_HTYPE_ETH

pType: NP_ARP_PTYPE_IPv4

hSize: NP_ARP_HSIZE_ETH

pSize: NP_ARP_PSIZE_IPv4

opCode: NP_ARP_OPCODE_REQUEST

src: $Env->mac

dst: NP_ARP_ADDR_BROADCAST

srcIp: $Env->ip

dstIp: 127.0.0.1

pack
Packs all attributes into a raw format, in order to inject to network. Returns 1 on success, undef otherwise.
unpack
Unpacks raw data from network and stores attributes into the object. Returns 1 on success, undef otherwise.
recv
Will search for a matching replies in framesSorted or frames from a Net::Packet::Dump object.
isRequest
isReply
Returns 1 if the opCode attribute is of specified type.

Load them: use Net::Packet::Consts qw(:arp);
NP_ARP_HTYPE_ETH
NP_ARP_PTYPE_IPv4
Hardware and protocol address types.
NP_ARP_HSIZE_ETH
NP_ARP_PSIZE_IPv4
Hardware and protocol address sizes.
NP_ARP_OPCODE_REQUEST
NP_ARP_OPCODE_REPLY
Operation code numbers.
NP_ARP_ADDR_BROADCAST
Broadcast address for src or dst attributes.

Patrice <GomoR> Auffret

Copyright (c) 2004-2009, Patrice <GomoR> Auffret

You may distribute this module under the terms of the Artistic license. See LICENSE.Artistic file in the source distribution archive.

NetPacket, Net::RawIP, Net::RawSock

Hey! The above document had some coding errors, which are explained below:
Around line 155:
Non-ASCII character seen before =encoding in '# Build'. Assuming CP1252
2009-11-09 perl v5.32.1

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