NetPacket::ICMPv6(3pm)

Usage

  use NetPacket::ICMPv6;
  $icmpv6_obj = NetPacket::ICMPv6->decode($raw_pkt);
  $icmpv6_pkt = NetPacket::ICMPv6->encode($ipv6_pkt);
  $icmpv6_data = NetPacket::ICMPv6::strip($raw_pkt);

Version

version 1.7.2

Overview

"NetPacket::ICMPv6" provides a set of routines for assembling and disassembling packets using ICMPv6 (Internet Control Message Protocol for IPv6).

Methods

"NetPacket::ICMPv6->decode([RAW PACKET])": Decode the raw packet data given and return an object containing instance data. This method will quite happily decode garbage input. It is the responsibility of the programmer to ensure valid packet data is passed to this method.

"NetPacket::ICMPv6->encode($ipv6_obj)": Return an ICMPv6 packet encoded with the instance data specified. Needs parts of the IPv6 header contained in $ipv6_obj in order to calculate the ICMPv6 checksum.

Functions

"NetPacket::ICMPv6::strip([RAW PACKET])": Return the encapsulated data (or payload) contained in the ICMPv6 packet.

Instance data

The instance data for the "NetPacket::ICMPv6" object consists of the following fields.

`type`	The ICMPv6 message type of this packet.
`code`	The ICMPv6 message code of this packet.
`cksum`	The checksum for this packet.
`data`	The encapsulated data (payload) for this packet.

Exports

default: none

exportable

ICMPv6 message types:

    ICMPv6_UNREACH ICMPv6_TOOBIG ICMPv6_TIMXCEED ICMPv6_PARAMPROB
    ICMPv6_PRIVATEERROR1 ICMPv6_PRIVATEERROR2 ICMPv6_EXPANSIONERROR
    ICMPv6_ECHOREQ ICMPv6_ECHOREPLY ICMPv6_MULTICASTQUERY
    ICMPv6_MULTICASTREPORT ICMPv6_MULTICASTDONE
    ICMPv6_ROUTERSOLICIT ICMPv6_ROUTERADVERT
    ICMPv6_NEIGHBORSOLICIT ICMPv6_NEIGHBORADVERT
    ICMPv6_REDIRECT ICMPv6_ROUTERRENUMBER
    ICMPv6_NODEINFOQUERY ICMPv6_NODEINFOREPLY
    ICMPv6_INVNEIGHBORSOLICIT ICMPv6_INVNEIGHBORADVERT
    ICMPv6_MULTICASTREPORTV2
    ICMPv6_HOMEAGENTREQUEST ICMPv6_HOMEAGENTREPLY
    ICMPv6_MOBILEPREFIXSOLICIT ICMPv6_MOBILEPREFIXADVERT
    ICMPv6_CERTPATHSOLICIT ICMPv6_CERTPATHADVERT
    ICMPv6_MULTICASTADVERT ICMPv6_MULTICASTSOLICIT
    ICMPv6_MULTICASTTERM ICMPv6_FMIPv6 ICMPv6_RPLCONTROL
    ICMPv6_DUPREQUEST ICMPv6_DUPCONFIRM ICMPv6_MPLCONTROL
    ICMPv6_EXTECHOREQ ICMPv6_EXTECHOREPLY
    ICMPv6_PRIVATEINFO1 ICMPv6_PRIVATEINFO2 ICMPv6_EXPANSIONINFO

ICMPv6 message codes:

    ICMPv6_UNREACH_NO_ROUTE ICMPv6_UNREACH_COMM_PROHIB
    ICMPv6_UNREACH_BEYOND_SCOPE ICMPv6_UNREACH_ADDRESS ICMPv6_UNREACH_PORT
    ICMPv6_UNREACH_SRC_FAIL_POLICY ICMPv6_UNREACH_REJECT_DEST
    ICMPv6_TIMXCEED_INTRANS ICMPv6_TIMXCEED_REASS
    ICMPv6_PARAMPROB_HEADER_FIELD ICMPv6_PARAMPROB_NEXT_HEADER
    ICMPv6_PARAMPROB_OPTION
    ICMPv6_ROUTERRENUMBER_COMMAND ICMPv6_ROUTERRENUMBER_RESULT
    ICMPv6_ROUTERRENUMBER_RESET
    ICMPv6_NODEINFOQUERY_IPv6 ICMPv6_NODEINFOQUERY_NAME
    ICMPv6_NODEINFOQUERY_IPv4 ICMPv6_NODEINFOREPLY_SUCCESS
    ICMPv6_NODEINFOREPLY_REFUSED ICMPv6_NODEINFOREPLY_UNKNOWN
    ICMPv6_RPLCONTROL_DODAG_SOLICIT ICMPv6_RPLCONTROL_DODAG_OBJECT
    ICMPv6_RPLCONTROL_DEST_ADVERT ICMPv6_RPLCONTROL_DEST_ACK
    ICMPv6_RPLCONTROL_SECURE_DODAG_SOLICIT ICMPv6_RPLCONTROL_SECURE_DODAG_OBJECT
    ICMPv6_RPLCONTROL_SECURE_DEST_ADVERT ICMPv6_RPLCONTROL_SECURE_DEST_ACK
    ICMPv6_RPLCONTROL_CONSISTENCY
    ICMPv6_EXTECHOREPLY_NO_ERROR ICMPv6_EXTECHOREPLY_MALFORMED
    ICMPv6_EXTECHOREPLY_NO_INTERFACE ICMPv6_EXTECHOREPLY_NO_ENTRY
    ICMPv6_EXTECHOREPLY_MULTIPLE

Examples

The following example prints the ICMPv6 type, code, and checksum fields.

  #!/usr/bin/perl
  use strict;
  use warnings;
  use Net::PcapUtils;
  use NetPacket::Ethernet qw(:strip);
  use NetPacket::IPv6 qw(:strip);
  use NetPacket::ICMPv6;
  sub process_pkt {
      my ($user, $hdr, $pkt) = @_;
      my $icmpv6_obj = NetPacket::ICMPv6->decode(ipv6_strip(eth_strip($pkt)));
      print("Type: $icmpv6_obj->{type}\n");
      print("Code: $icmpv6_obj->{code}\n");
      print("Checksum: $icmpv6_obj->{cksum}\n\n");
  }
  Net::PcapUtils::loop(\&process_pkt, FILTER => 'icmp6');

Releases

5 releases since Debian 6.0 (Squeeze); the text changed 3 times.