NAME

RA_wHOPL254 - Invalid RA with Hop Limit 254

TARGET

Host only

SYNOPSIS

RA_wHOPL254.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

Verify that a host properly processes the Prefix Information Option in the Router Advertisement.

Test for Unicast address autoconfiguration

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

Test for host only

   When NUT receives RA which contains Global Prefix but its Hop Limit value 
   is 254,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_GA0_HL254

  X<== Judgement #3: DAD NS =======
        name: DADNS_from_NUT_GA0Tgt

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

  Check if NUT's address is configured
  ==== Action #2: SOL NS =========>
        name: SOLNS_from_TN_GA0Tgt

  X<== Judgement #4: SOL NA =======
        name: 
              NA_from_NUT_GA0Tgt, 
              NA_from_NUT_GA0Tgt_woTLL, 
              NA_from_GA0NUT_GA0Tgt, 
              NA_from_GA0NUT_GA0Tgt_woTLL

JUDGEMENT

Test for Unicast address autoconfiguration

Test for host only

NUT performs Stateless Address Autoconfiguration(Global) 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 Global Prefix.
        name: RA_GA0_HL254
        src: TN's Link-local
        dst: allnode
        Hop Limit: 254
        PXOPT: Global0

   Judgement #3. NUT MUST NOT transmit DAD NS for its autoconfigured Global address.
                 (* If the address is consisits of EUI64, as same as Link-local
                 address, This DAD MAY be omitted.)
        name: DADNS_from_NUT_GA0Tgt
        src: ::0
        dst: solnode[NUT's tentative Global0]
        TargetAddress: NUT's tentative Global0

   Action #2. TN transmits SOL NS to check if NUT's address is configured.
        name: SOLNS_from_TN_GA0Tgt
        src: TN's Link-local
        dst: solnode[NUT's Global0]
        TargetAddress: NUT's Global0

   Judgement #4. NUT MUST NOT transmit SOL NA for its autoconfigured  Global address.
        name: 
              NA_from_NUT_GA0Tgt, 
              NA_from_NUT_GA0Tgt_woTLL, 
              NA_from_GA0NUT_GA0Tgt, 
              NA_from_GA0NUT_GA0Tgt_woTLL
        src: NUT's any Unicast Address
        dst: TN's Link-local
        TargetAddress: NUT's Global0
        RFlag: 0
        SFlag: 1
        OFlag: 1
        TLLOPT: NUT's MAC address
        (* TLLOPT may be omitted)

CLEANUP

NONE

REFERENCE

RFC 4862 - IPv6 Stateless Address Autoconfiguration