NAME

LLA_DAD_NAPostDAD_DiffTgt - check the process when NUT receives DAD NA with different Target address after sending DAD NS.

TARGET

All Node

SYNOPSIS

LLA_DAD_NAPostDAD_DiffTgt.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 DAD NA for
   other target address from other node, 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: DAD NA =========>
        name: DADNA_from_TN_DiffTgt

  Wait for DupAddrDetectTransmits*RetransTimer

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

  <=== Judgement #2: DAD 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 DAD NA which contains different target Address
        name: DADNA_from_TN_DiffTgt
        src: TN's Link-local
        dst: allnode
        TargetAddress: TN's Link-local
        RFlag: 0
        SFlag: 0
        OFlag: 1
        OLLOPT: TN's MAC address

   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



5.4.  Duplicate Address Detection


   (omit)
   An address on which the duplicate Address Detection Procedure is
   applied is said to be tentative until the procedure has completed
   successfully.  A tentative address is not considered "assigned to an
   interface" in the traditional sense. That is, the interface must
   accept Neighbor Solicitation and Advertisement messages containing
   the tentative address in the Target Address field, but processes such
   packets differently from those whose Target Address matches an
   address assigned to the interface. Other packets addressed to the
   tentative address should be silently discarded.
   (omit)