#!/usr/bin/perl
#
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# $TAHI: ct/tunnel/decapsulation_host.seq,v 1.10 2001/10/05 06:39:22 masaxmasa Exp $
########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name: REL_2_1_2 $'; }
use V6evalTool;
use tunnel;

checkNUT(host);

$IF=$tunnel::IF_ID_0;
$IF1=$tunnel::IF_ID_1;

vCapture($IF);

$ret=makeNCE_TN_LLA();
if( $ret !=0) {
        vLogHTML("<FONT COLOR=#FF0000><H4>NUT can not be initialized !!</H4></FONT>");
        goto error;
}else {
        vLogHTML("<H4>--- TN can make TN's link local address NCE in TN ---</H4>");
}

$ret=makeNCE_TN_GA();
if( $ret !=0) {
        vLogHTML("<FONT COLOR=#FF0000><H4>NUT can not be initialized !!</H4></FONT>");
        goto error;
}else {
        vLogHTML("<H4>--- TN can make TN's global address NCE in TN ---</H4>");
}

$ret=makeARPTable_LINK0();
if( $ret !=0) {
        vLogHTML("<FONT COLOR=#FF0000><H4>NUT can not convert v4 address to Ethernet address !!</H4></FONT>");
        goto error;
}else {
        vLogHTML("<H4>--- NUT can convert v4 address to Ethernet address ---</H4>");
}

vSend($IF,v6overv4_echo_request_LINK0_tn2nut);


%ret=vRecv($IF,5,0,0,
	echo_reply_LINK0_nut2tn);
if( $ret{status} !=0) {
	vLogHTML("<FONT COLOR=#FF0000><H4>TN can not receive ICMPv4 Echo Reply which is encapsulated in the IPv4 packet </H4></FONT><BR>");
	goto error;
}elsif( $ret{recvFrame} eq 'echo_reply_LINK0_nut2tn') {
	vLogHTML("<H4>TN can receive ICMPv6 Echo Reply which is encapsulated in the IPv4 packet</H4><BR> ");
	vLogHTML("<H3>OK</H3>");
	exit $V6evalTool::exitPass;
}else {
	goto error;
}	

error:

vLogHTML("<FONT COLOR=#FF0000><H3>NG</H3></FONT>");
exit $V6evalTool::exitFail;

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

=head1 NAME

	decapsulation_host.seq - Verify that node decapsulate IPv6 
	datagram in IPv4 packet

=head1 TARGET

	Host 

=head1 SYNOPSIS

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

=head1 INITIALIZATION

=begin html
<PRE>
	Before this test starts, run <A HREF="./initialize.html">initialize.seq</A>.
</PRE>

=end html

=head1 TEST PROCEDURE

	This test verifies that NUT decapsulates the IPv6 packet in a IPv4 
	packet
	

	TN			NUT

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

	1.
	 === IPv4 packet encapsulating IPv6 packet ===>
		Outer Header (IPv4)	
			src address : Off-link IPv4 address
			dst address : NUT's IPv4 address        
		Inner Header (IPv6)	
			src address : Off-link IPv6 global address
			dst address : NUT's IPv6 global address        
	2.
	In NUT, received IPv4 packet is decapsulated, and NUT creates the 
	IPv6 Echo reply packet in response to encapsulated IPv6 Echo Request.
	3.
	<< JUDGMENT >>

	 <=== ICMPv6 Echo Reply ===
		IPv6 Header
			src address : NUT's IPv6 address
			dst address : Offlink IPv6 global address
          

=head1 JUDGMENT

	<< PASS >>
		NUT received ICMPv6 Echo Reply
		

	<< FAIL >>	
		NUT did not receive ICMPv6 Echo Reply


=head1 SEE ALSO

	perldoc V6evalTool

=cut