#!/usr/bin/perl
#
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# $TAHI: ct/icmp/To_ICMPErr_Dst_Unreach_4.seq,v 1.1 2003/03/26 07:47:33 masaxmasa Exp $
########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name: REL_2_1_2 $'; }
use V6evalTool;
use icmp;

$IF=Link0;

checkNUT(router);

#
#
#
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 can make TN's link local address NCE in TN ***");
}

$ret = mkNCE_Global();

if ($ret != 0) {
	vLog("NUT can not be initialized !!");
	goto error;
}
else {
	vLog("*** TN can make TN's global address NCE in TN ***");
}

%pktdesc = (
	dst_unreach_4	=> 'Send Port Unreachable Message',
	dst_unreach_0	=> 'Receive ICMP Error (Destination Unreachable, no route to destination)',
	ns_global	=> 'Receive Neighbor Solicitation',
	ns_global_sll	=> 'Receive Neighbor Solicitation',
	na_global	=> 'Send Neighbor Advertisement'
);

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

vSend($IF, dst_unreach_4);

%ret = vRecv($IF, 5, 0, 0, dst_unreach_0, ns_global, ns_global_sll);

if ($ret{status} != 0) {
	vLog("TN do not receive ICMPv6 error message from NUT");
	vLog("OK");
	exit($V6evalTool::exitPass);
}
elsif ($ret{recvFrame} eq 'dst_unreach_0') {
	vLog("TN receive ICMPv6 error message from NUT");
	goto error;
}
elsif ($ret{recvFrame} eq 'ns_global' || $ret{recvFrame} eq 'ns_global_sll') {
	vSend($IF, na_global);

	%ret = vRecv($IF, 5, 0, 0, dst_unreach_0);
	if ($ret{status} != 0) {
		vLog("TN do not receive ICMPv6 error message from NUT");
		vLog("OK");
		exit($V6evalTool::exitPass);
	}
	elsif ($ret{recvFrame} eq 'dst_unreach_0') {
		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

	To_ICMPErr_Dst_Unreach_4.seq - check Message Processing Rules (ICMPv6
	Destination Unreachable)

=head1 TARGET

	Router

=head1 SYNOPSIS

	To_ICMPErr_Dst_Unreach_4.seq [-tooloption ...] -p To_ICMPErr_Dst_Unreach_4.def

=head1 NETWORK CONFIGURATION

        This test is OFF-LINK Network Configuration test.
        
        Physical Network configuration
        
        ---------------------------------------
                |               |
                NUT             TN



        Logical Network Configuration

                                TN
                                |
        ----------------------------------
                        |
                        NUT
                        |
        ----------------------------------
                | 
                OFFLINKA Host


=head1 INITIALIZATION

	Make a Neighbor Cache Entry for TN's in NUT.

=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.1) an ICMPv6 error message, or


	TN			NUT

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

	1.
	 === ICMPv6 Destination Unreachable  ===>
		src address : TN global address
		dst address : OFFLINK address
		code        : port unreachable
	2.
		NUT can't deliver to destination address.
		(NUT have not route for the dst address.)
	3.
	<< JUDGMENT >>
	
	 <=== No packets ===
			or	
	 <=== ICMPv6 Destination Unreachable ===
             Code is 4

=head1 JUDGMENT

	<< PASS >>
		NUT do not send ICMPv6 Destination Unreachable.

	<< FAIL >>	
		NUT send ICMPv6 Destination Unreachable.


=head1 SEE ALSO

	  perldoc V6evalTool

=cut