NAME

        destination_unreachable_code_four.seq - check ICMPv6 Destination 
        Unreachable code 4 

TARGET

        Host and Router

SYNOPSIS

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

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 4) in response to a packet which can not 
        be delivered to destination port.
        

        TN                      NUT

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

        1.
         === UDP packet  ===>
                src address : TN link local address
                dst     address : NUT link local address        
                        port number is not used in NUT
        2.
        << JUDGMENT >>

         <=== ICMPv6 Destination Unreachable ===
                Code is 4

JUDGMENT

        << PASS >>
                NUT send ICMPv6 Destination Unreachable.
                

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

SEE ALSO

          perldoc V6evalTool