#!/usr/bin/perl
#
# $Copyright$
#
# $TAHI: ct/tunnel/automatic_encapsulation_router.seq,v 1.9 2001/10/05 06:39:22 masaxmasa Exp $
########################################################################
BEGIN { $V6evalTool::TestVersion = '$Name:  $'; }
use V6evalTool;
use tunnel;

checkNUT(router);

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

vCapture($IF);
vCapture($IF1);

$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_LINK1();
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, v6_echo_request_LINK0_tn2nut_OFFLINK);

%ret=vRecv($IF1,5,0,0,v6overv4_echo_request_LINK1_nut2tn);
if( $ret{status} !=0) {
	vLogHTML("<FONT COLOR=#FF0000><H4>TN can not receive Echo Reply from NUT</H4></FONT><BR>");
	goto error;
}else {
	vLogHTML("<H4>TN can receive Echo Reply from NUT</H4><BR>");
	vLogHTML("<H3>OK</H3>");
	exit $V6evalTool::exitPass;
}	
	
error:

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




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

=head1 NAME

	automatic_encapsulation_router.seq - Verify that encapsulation a 
	IPv6 datagram in the automatic tunneling of IPv6 over IPv4 

=head1 TARGET

	Router

=head1 SYNOPSIS

	automatic_encapsulation_router.seq [-tooloption ...] -p 
	automatic_encapsulation_router.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 encapsulates the IPv6 packet in 
	automatic tunneling of IPv6 over IPv4.
	
	Network Topology

	Link0
	--------------------------
	    |               |
	   TN              NUT
	    |               |
	--------------------------
	Link1

	TN -- (Link0) -- NUT        TN -- (Link1) -- NUT
	
	---------------------      ------------------------

	1.
	===================>
	ICMPv6 Echo Request
		IPv6 Header
			src address : TN LINK0 IPv4 compatible IPv6 address
			dst address : Off-link IPv4 compatible IPv6 address

	2.
	<<JUDGMENT>>
                                <===================
	IPv4 packet encapsulating IPv6 packet
		Outer Header (IPv4)
			src address : NUT's Link1 IPv6 address
			dst address : Off-link IPv6 address
		Inner Header (IPv6)
			src address : TN LINK0 IPv4 compatible IPv6 address
			dst address : Off-link IPv4 compatible IPv6 address
         
=head1 JUDGMENT

	<< PASS >>
		NUT received IPv4 packet encapsulating IPv6 datagram
		

	<< FAIL >>	
		NUT did not receive IPv4 packet encapsulating IPv6 datagram


=head1 SEE ALSO

	perldoc V6evalTool

=cut