NAME

        rfc2765_3.1_payloadlength.seq - Verify IPv6 <-> IPv4 header 
        translation in accordance with RFC2765 [SIIT]

TARGET

        Router

SYNOPSIS

        rfc2765_3.1_payloadlength.seq [-tooloption ...] 
        -p rfc2765_3.1_payloadlength.def

INITIALIZATION

	Before this test starts, run initialize.seq.

TEST PROCEDURE

        This test verifies that NUT can translates IPv4 header
        to IPv6 header, when IPv4 header contain options.
        
        Network Topology

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

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

        1.1.
                                   <===================
        ICMPv4 Echo request
                IPv4 Header
                        src address : TN LINK1 IPv4 address
                        dst address : TN LINK0 IPv4 address
                        Don't Fragment = 1
                        More fragments = 0
                        Offset = 0
                        Timestamp Option (8 bytes)
                ICMPv4 echo request

        1.2.
        <<JUDGMENT>>
        <===================
        ICMPv6 Echo Request
                IPv6 Header
                        src address : TN LINK1 IPv4 embedded IPv6 address
                        dst address : TN LINK0 IPv4 embedded IPv6 address
                ICMPv6 echo request
         
=head1 JUDGMENT

        << PASS >>
                TN (Link0) receive four ICMPv6 echo requests, 
                with correct payload length.
                
        << FAIL >>      
                TN (Link0) receive four ICMPv6 echo requests, 
                with payload length 8 bytes too large.

NOTE

REFERENCE

RFC2765

3.1. Translating IPv4 Headers into IPv6 Headers

         Payload Length:
                 Total length value from IPv4 header, minus the size
                 of the IPv4 header and IPv4 options, if present.