#!/usr/bin/perl
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# $TAHI: ct/icmp/P_Problem_Link-Local.seq,v 1.1 2003/03/26 07:47:32 masaxmasa Exp $
#----------------------------------------------------------------------

BEGIN { $V6evalTool::TestVersion = '$Name: REL_2_1_2 $'; }
use V6evalTool;
use icmp;

$IF = Link0;

#----------------------------------------------------------------------
# Initialization
#----------------------------------------------------------------------

vLogHTML("<FONT SIZE=\"+1\">Initialization</FONT><BR>");

vCapture($IF);

$ret = mkNCE_Link();

if ($ret != 0) {
	vLog("*** NUT can not be initialized !! ***");
	goto error;
}
else {
	vLog("TN created the entry of TN's link-local address to Neighbor cache of NUT.");
};

#----------------------------------------------------------------------
# Test
#----------------------------------------------------------------------
%pktdesc = (
    unknown_nxthdr	=> 'Send packet include unknown next header field value',
    parameter_problem	=> 'Receive Parameter Problem (unrecognized Next Header)'
);

vLogHTML("<FONT SIZE=\"+1\">Test</FONT><BR>");

vSend($IF, unknown_nxthdr);

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

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

error:

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

#----------------------------------------------------------------------

__END__

=head1 NAME

	P_Problem_Link-Local.seq - check Message Processing Rules (ICMPv6
	Destination Unreachable , link local address)

=head1 TARGET

	Host/Router

=head1 SYNOPSIS

	P_Problem_Link-Local.seq [-tooloption ...] -p P_Problem_Link-Local.def


=head1 INITIALIZATION

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

=head1 TEST PROCEDURE

	This test verifies that NUT send valid ICMPv6 Parameter Problem (code 1)
	in response to a packet include unknown next header field value.
	And this test verifies that the message processing rule ,
	
	If the message is a response to a message sent to one of the
	node's unicast addresses, the Source Address of the reply must
	be that same address.


	TN			NUT

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

	1.
	 === IPv6 packet  ===>
		src address : TN link local address
		dst address : NUT link local address
			next header  is not used in NUT
	2.
	<< JUDGMENT >>

	 <=== ICMPv6 Prameter Problem ===
		src address : NUT link local address
		dst address : TN link local address
			Code is 1
			Pointer is 40

=head1 JUDGMENT

	<< PASS >>
		NUT send ICMPv6 ICMPv6 Parameter Problem.
		

	<< FAIL >>	
		NUT do not send ICMPv6 Parameter Problem.


=head1 SEE ALSO

	  perldoc V6evalTool

=cut