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#!/bin/bash
test -z "$1" -o "$1" = "-h" -o -z "$4" && {
echo "Syntax: $0 [-s src4] interface ipv4-to-6-gw ipv6src ipv6dst [port]"
echo
echo "Options:"
echo " -s src4 spoofs the specified IPv4 source ddress"
echo
echo "Send an IPv6 packet to an IPv4 6to4 gateway. If a port is specified, a UDP"
echo "packet is sent, otherwise an ICMPv6 ping."
echo "Note: the packet is sent to the IPv4 default gateway!"
exit 1
}
SRC4=
test "$1" = "-s" && { shift ; SRC4=$1 ; shift ; }
test -z "$4" && SRC4=`ifconfig $1 | grep "inet addr:" | awk -F: '{print$2}' | sed 's/ .*//'`
MAC4=`ifconfig $1 | grep "^$1" | sed 's/.*HWaddr //i' | tr -d ' \t'`
DST4=$2
ROUTER4=`ip -4 route show | grep $1 | grep via | grep default | awk '{print$3}'`
MAD4=`arp -a -v -n | grep "($ROUTER4)" | awk '{print$4}'`
PORT=
test -n "$5" && PORT="-U $5"
echo export THC_IPV6_6IN4=$MAC4,$MAD4,$SRC4,$DST4
echo thcping6 $PORT $1 $3 $4
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