# NAME

LLA_DAD_NSPostDAD_SrcDstUni - check the process when NUT receives NS for address `resolution(Src=Unicast,Dst=Unicast)` after transmitting DAD NS

# TARGET

All Node

# SYNOPSIS

LLA_DAD_NSPostDAD_SrcDstUni.seq [-tooloption ...] -pkt <packetdef> [addrconf=<addrconfname>]

      -tooloption   : v6eval tool option
      <packetdef>   : packet definition file (v6eval tool option)
      <addrconfname>: how to configure address on NUT; boot/reboot

     detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm

# INITIALIZATION

     Reboot NUT or Initialize interface of NUT or Initialize IPv6 stack of NUT.

# TEST PROCEDURE

Test for Unicast address configuration

  The following tests are prepared in this test package. See INDEX file.

  Test for all node

         NUT assignes autoconfigured address, even though NUT receives NS for address
         resolution while DAD process (after transmitting DAD NS).

  Test sequence

        TN                            NUT
        ---------------------------------
        Initialize NUT

        Configure address of NUT (reboot or interface initialization etc...)

        TN wait the DAD NS sent from NUT
        <=== Judgement #1: DAD NS =======
              name: DADNS_from_NUT

        ==== Action #1: NS =============>
              name: NS_from_TN_SrcDstUni

        Wait for DupAddrDetectTransmits*RetransTimer

        Check if NUT's address is configured
        ==== Action #2: SOL NS =========>
              name: SOLNS_from_TN_SameTgt

        <=== Judgement #2: SOL NA =======
              name: NA_from_NUT, NA_from_NUT_woTLL

# JUDGEMENT

Test for Link-local Unicast address autoconfiguration

  Test for all NODE

  NUT performs Stateless Address Autoconfiguration(Link-local) on its interface

         Judgement #1. NUT MUST transmit DAD NS for its autoconfigured Link-local address.
              name: DADNS_from_NUT
              src: ::0
              dst: solnode[NUT's tentative Link-local]
              TargetAddress: NUT's tentative Link-local

         Action #1. TN transmits NS which contains unicast as source address for NUT's
       tentative Link-local address
              name: NS_from_TN_SrcDstUni
              src: TN's Link-local
              dst: NUT's tentative Link-local
              TargetAddress: NUT's tentative Link-local

         Action #2. TN transmits SOL NS to check if NUT's address is configured
              name: SOLNS_from_TN_SameTgt
              src: TN's Link-local
              dst: solnode[NUT's Link-local]
              TargetAddress: NUT's Link-local

         Judgement #2. NUT MUST transmit SOL NA for its autoconfigured  Link-local address.
              name: NA_from_NUT, NA_from_NUT_woTLL
              src: NUT's Link-local
              dst: TN's Link-local
              TargetAddress: NUT's Link-local
              RFlag: 0 ( if NUT is a Router then 1)
              SFlag: 1
              OFlag: 1
              TLLOPT: NUT's MAC address

# REFERENCE

    RFC2462

       (omit)
    5.4.3.  Receiving Neighbor Solicitation Messages

       On receipt of a valid Neighbor Solicitation message on an interface,
       node behavior depends on whether the target address is tentative or
       not.  If the target address is not tentative (i.e., it is assigned to
       the receiving interface), the solicitation is processed as described

       in [DISCOVERY].  If the target address is tentative, and the source
       address is a unicast address, the solicitation's sender is performing
       address resolution on the target; the solicitation should be silently
       ignored.  Otherwise, processing takes place as described below. In
       all cases, a node MUST NOT respond to a Neighbor Solicitation for a
       tentative address.

       (omit)

# SEE ALSO

     detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm