#!/usr/bin/perl
#
# $Copyright$
#
# $Id: MPR_e2_tim_exc.seq,v 1.1.1.1 2000/10/31 22:38:50 sekiya Exp $
########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name:  $'; }
use V6evalTool;
use icmp;

$IF=Link0;

checkNUT(hostrouter);

vCapture($IF);

$ret=makeNCE_TN_LLA();
if( $ret !=0) {
        vLog("NUT can not be initialized !!");
        exit $V6evalTool::exitFail;
}else {
        vLog("*** TN can make TN's link local address NCE in TN ***");
}
$ret=makeNCE_TN_GA();
if( $ret !=0) {
        vLog("NUT can not be initialized !!");
        exit $V6evalTool::exitFail;
}else {
        vLog("*** TN can make TN's global address NCE in TN ***");
}

#
# check reachability 
#
vSend($IF, echo_request_tn2nut_LLA);
%ret=vRecv($IF,5,0,0,echo_reply_nut2tn_LLA);
if( $ret{status} !=0) {
        vLog("TN do not receive Echo Reply message from NUT");
        vLog("NUT <--> TN reachable ?? ");
		goto error;
}elsif($ret{recvFrame} eq 'echo_reply_nut2tn_LLA') {
        vLog("*** There is reachability between TN and NUT ***");
}else {
        vLog("TN receive unexpected packets from NUT");
        goto error;
}


vSend($IF,fragmented_echo_request_tn2nut_LLA_first);

%ret=vRecv($IF,5,0,0,time_exceeded_nut2tn_LLA_code_1);
				

if( $ret{status} !=0) {
        vLog("TN do not receive ICMPv6 error message from NUT");
        vLog("OK");
        exit $V6evalTool::exitPass;
}elsif($ret{recvFrame} eq 'time_exceeded_nut2tn_LLA_code_1') {
        vLog("TN receive ICMPv6 error message from NUT");
		goto error;
}else {
        vLog("TN receive unexpected packets from NUT");
        goto error;
}   



error:

vLog("FAIL");
exit $V6evalTool::exitFail;


########################################################################
__END__

=head1 NAME

	MPR_e2_tim_exc.seq - check Message Processing Rules (ICMPv6
	Time Exceeded, link local address)

=head1 TARGET

	Host and Router

=head1 SYNOPSIS

	MPR_e2_tim_exc.seq [-tooloption ...] -p MPR_e2_tim_exc.def


=head1 INITIALIZATION

	When test stars, states of Neighbor Cache Entry for TN's 
	addresses are reachable.

=head1 TEST PROCEDURE

	This test verifies that the message processing rule ,
	
    (e) An ICMPv6 error message MUST NOT be sent as a result of
        receiving:

         (e.2) a packet destined to an IPv6 multicast address (there are
               two exceptions to this rule: (1) the Packet Too Big
               Message - Section 3.2 - to allow Path MTU discovery to
               work for IPv6 multicast, and (2) the Parameter Problem
               Message, Code 2 - Section 3.4 - reporting an unrecognized
               IPv6 option that has the Option Type highest-order two
               bits set to 10), or


	TN			NUT

	---------------------------

	1.
	 === fragmented (1st) packet  ===>
		src address : TN link local address
		dst address : all node multi cast address
             
	2.
	<< JUDGMENT >>

	 <=== No packet  ===
			or
	 <=== ICMPv6  Time Exceeded ===
             Code is 1

=head1 JUDGMENT

	<< PASS >>
		NUT do not send ICMPv6 Time Exceeded.
		

	<< FAIL >>	
		NUT send ICMPv6 Time Exceeded.


=head1 SEE ALSO

	  perldoc V6evalTool

=cut