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)