NAME

        Echo_Multicast.seq - check that sending 
        and receiving Echo Request and Echo Reply (Multicast Address)

TARGET

        Host/Router

SYNOPSIS

        Echo_Multicast.seq [-tooloption ...] -p Echo_Multicast.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 NUT receives valid ICMPv6 Echo Request 
        and sent ICMPv6 Echo Reply.

        TN                      NUT

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

        1.
         === ICMPv6 Echo Request ===>
                        src address : TN link local address
                        dst address : all node link local multicast address        
        2.
        << JUDGEMENT >>

         <=== ICMPv6 Echo Reply ===
                        src address : NUT global or link local address
                        dst address : TN link local address

JUDGEMENT

        << PASS >>
                NUT send ICMPv6 Echo Reply

        << FAIL >>      
                NUT do not send ICMPv6 Echo Reply

REFERENCE

RFC 2463 - ICMPv6 (ICMP for IPv6)