NAME

        destination_unreachable_code_three.seq - check ICMPv6 Destination 
        Unreachable code 3

TARGET

        Host and Router

SYNOPSIS

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

NETWORK CONFIGURATION

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

        Logical Network Configuration

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

INITIALIZATION

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

TEST PROCEDURE

        This test verifies that NUT sends valid ICMPv6 Destination 
        Unreachable (code 3) in response to a packet which can not 
        be delivered to destination address (e.g. Address Resolution 
        in ND).

        TN                      NUT

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

        1.
         === Echo Request packet  ===>
                src address : TN link local address
                dst address : NUT Link1 unreachable address
        2.
        << JUDGMENT >>

         <=== ICMPv6 Destination Unreachable ===
                Code is 3

JUDGMENT

        << PASS >>
                NUT send ICMPv6 Destination Unreachable.

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