#!/usr/bin/perl
#
# $Id: icmp-dest-unreach.pl 1640 2009-11-09 17:58:27Z gomor $
#
use strict;
use warnings;
use Getopt::Std;
my %opts;
getopts('i:d:I:v', \%opts);
die "Usage: $0 -i dstIp [-d device] [-I srcIp] [-v]\n"
unless $opts{i};
use Net::Packet;
$Env->dev($opts{d}) if $opts{d};
$Env->ip ($opts{I}) if $opts{I};
$Env->debug(3) if $opts{v};
$Env->noFrameAutoDump(1);
my $ip = Net::Packet::IPv4->new(
protocol => NP_IPv4_PROTOCOL_ICMPv4,
dst => $opts{i},
);
my $iperror = Net::Packet::IPv4->new(dst => "127.0.0.1");
my $tcperror = Net::Packet::TCP->new(dst => 6666);
my $error = Net::Packet::Frame->new(l3 => $iperror, l4 => $tcperror);
my $icmp = Net::Packet::ICMPv4->new(
type => NP_ICMPv4_TYPE_DESTINATION_UNREACHABLE,
code => NP_ICMPv4_CODE_PORT,
error => $error,
);
my $frame = Net::Packet::Frame->new(
l3 => $ip,
l4 => $icmp,
);
$frame->send;