NAME

RA_wPXLLA - check the process when NUT receives invalid RA which contains one Link-local prefix(PX=LLA)(NOT Re-assigning Link-local address)

TARGET

All Node

INITIALIZATION

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

TEST PROCEDURE

Test for Unicast address autoconfiguration

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

Test for all node

   When NUT receives invalid RA which contains Link-local Prefix,
   NUT MUST NOT assign autoconfigured address. 

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

  <=== Judgement #2: RS ===========
        name: RS_from_NUT, RS_from_NUT_wSLL

  ==== Action #1: RA =============>
        name: RA_LLA

  X<== Judgement #3: DAD NS =======
        name: DADNS_from_NUT

  Wait for 5+DupAddrDetectTransmits*(RetransTimer/1000)[sec]

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

  <=== Judgement #4: SOL NA =======
        name: NA_from_NUT, NA_from_NUT_woTLL

JUDGEMENT

Test for Unicast address autoconfiguration

Test for all NODE

NUT performs Stateless Address Autoconfiguration 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

   Judgement #2. NUT SHOULD transmit RS.
        name: RS_from_NUT
        src: NUT's Link-local
        dst: allrouter

   Action #1. TN transmits RA which contains Link-local Prefix.
        name: RA_LLA
        src: TN's Link-local
        dst: allnode
        PXOPT: Link-local

   Judgement #3. NUT MUST NOT transmit DAD NS for its autoconfigured Link-local address in this timing.
        name: DADNS_from_NUT
        src: ::0
        dst: solnode[NUT's tentative Link-local]
        TargetAddress: NUT's tentative Link-local

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

   Judgement #4. 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
        SFlag: 1
        OFlag: 1

REFERENCE

RFC2462

5.5.3.  Router Advertisement Processing 

   (omit)
   For each Prefix-Information option in the Router Advertisement:


    a) If the Autonomous flag is not set, silently ignore the
       Prefix Information
       option.



    b) If the prefix is the link-local prefix, silently ignore the
       Prefix Information option.



    c) If the preferred lifetime is greater than the valid lifetime,
       silently ignore the Prefix Information option. A node MAY wish to
       log a system management error in this case.


    d) If the prefix advertised does not match the prefix of an address
       already in the list, and the Valid Lifetime is not 0, form an
       address (and add it to the list) by combining the advertised
       prefix with the link's interface identifier as follows:
   (omit)

SEE ALSO

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