NAME

        Err_Condition_Port_Unreachable.seq - check Message Processing Rules (ICMPv6
         Destination Unreachable )

TARGET

        Host/Router

SYNOPSIS

        Err_Condition_Port_Unreachable.seq [-tooloption ...] -p Err_Condition_Port_*.def

INITIALIZATION

        If the NUT is a host, send a Router Advertisment.
        If the NUT is a router, configure a default route with TN as the next hop.
        And make state of Neighbor Cashe Entry for TN's addresses reachable.

TEST PROCEDURE

        This test verifies that the message processing rule,
        
        An ICMPv6 error message MUST NOT be sent as a result of
        receiving:

        a packet whose source address does not uniquely identify
        a single node -- e.g., the IPv6 Unspecified Address, an
        IPv6 multicast address, or an address known by the ICMP
        message sender to be an IPv6 anycast address.

        TN                      NUT

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

        1.
         === ICMPv6 Echo Request  ===>
                src address : does not identify a single node uniquely
                dst address : NUT global address
                         port number is not used in NUT

        2.
        << JUDGEMENT >>

         <=== No pakcet ===
                        or
         <=== ICMPv6 Destination Unreachable ===
             Code is 4

JUDGEMENT

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

REFERENCE

RFC 2463 - ICMPv6 (ICMP for IPv6)