NAME

DAD Success when NUT received NA (Dst addr is unicast) on Stateless Link-local address autoconfiguration

TARGET

Host and Router

SYNOPSIS

DADSuccess_DADPostSendNS.seq -pkt LLOCAL_unspecNA_dst_ucast.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 Link-local address of NUT by rebooting (addrconf=boot, see Addrconf phase)

  TN wait the DAD NS sends from NUT
  <=== Judgement #1: DAD NS ====
        name: dadns_from_NUT

  Immediately (within $RetransTimerSec [sec]) send strange DAD Packet to NUT to check if NUT ignore this.
  ==== Action #1: DAD NS ====>
        name: dadpkt_to_NUT

  Wait for NUT to finish DAD. (sleep $RetransTimerSec [sec])

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

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

JUDGEMENT

   Judgement #1. DAD NS must come from NUT on Link-local address autoconfiguration.
        name: dadns_from_NUT
        src: ::0
        dst: solnode[NUT's tentative Link-local address]
        TargetAddress: NUT's tentative Link-local address

   Action #1. Send strange DAD NA to NUT to check if NUT ignore this.
        name: dadpkt_to_NUT
        ether src: different as NUT's MAC address
        src: NUT's Link-local address
        dst: NUT's Link-local address
             ... Regularly  dst is allnodes multicast. At this point, NUT doesnot assign the address,
                 so NUT cannot accept the packet and cannot detect address duplication. It's not
                 specified in RFC but looks like natural.
        TargetAddress: NUT's tentative Link-local address

   Action #2. Send DAD NS to check if NUT's address is 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 come from NUT because NUT does not 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.