NAME

DAD Fail when NUT received Valid NS in random delaying phase on Stateless Link-local address autoconfiguration

TARGET

Host and Router

SYNOPSIS

DADFail_DADPreSendNS.seq -pkt LLOCAL_valNS_SameMacAddr.def addrconf=boot

 detail of parameters: see Test sequence for IPv6 Stateless Address Autoconfiguration.

INITIALIZATION

 init=none
 detail of Initialization: see Test sequence for IPv6 Stateless Address Autoconfiguration.

TEST PROCEDURE

  TN(or X)                   NUT
  ------------------------------
  Initialize NUT (see INITIALIZATION)

  Configure address of NUT by reboot (sequence parameter addrconf=boot)

  while waiting reboot (120[sec]) {
     Send DAD Packet to NUT to force NUT to detect address duplication.
     ==== Action #1: DAD NS ====>
           name: dadpkt_to_NUT

     Check if the DAD NS does not come from NUT
     (when NUT detect address duplication in random delaying phase).
     If DAD NS come, retry the test sequence.
     <=== Judgement #1: DAD NS does not come====
           name: dadns_from_NUT
           timeout: 2 [sec]  (2[sec] >= RandomDelay=0-1[sec] + RetransTimer=1[sec])
  }

  Check if NUT's address is not configured
  ==== Action #2: DAD NS ====>
        name: chkconf_dadns_to_NUT

  DAD NA does not come because NUT detect address duplicated and address is not configured.
  <=== Judgement #2: DAD NA does not come====
        name: chkconf_dadna_from_NUT (or chkconf_dadna_from_NUT_rf1 if NUT is a Router)

JUDGEMENT

   Action #1. Send DAD NS to force NUT to detect address duplication.
        name: dadpkt_to_NUT
        src: ::0
        dst: solnode[NUT's tentative Link-local address]
        TargetAddress: NUT's tentative Link-local address

   Judgement #1. DAD NS does not come from NUT
        name: dadns_from_NUT
        src: ::0
        dst: solnode[NUT's tentative Link-local address]
        TargetAddress: NUT's tentative Link-local address

   Action #2. Send DAD NS to check if NUT's address is not configured
        name: chkconf_dadns_to_NUT
        src: ::0
        dst: solnode[NUT's Link-local address]
        TargetAddress: NUT's Link-local address

   Judgement #2. DAD NA must not come from NUT because NUT detect address duplication.
        name: chkconf_dadna_from_NUT (or chkconf_dadna_from_NUT_rf1 if NUT is a Router)
        src: NUT's Link-local address
        dst: allnodes multicast
        TargetAddress: NUT's Link-local address
        OFlag: 1
        RFlag: 0 ( if NUT is a Router then 1)

SEE ALSO

 detail of v6eval tool option: see perldoc V6evalTool.pm, perldoc V6evalRemote.pm
 detail of parameters: see Test sequence for IPv6 Stateless Address Autoconfiguration.