# NAME

      DstSelectRule6.seq - Destination Address Selection
                           Check Rule 6(Prefer matching label)

      Rule 6: Prefer higher precedence.
        If Precedence(DA) > Precedence(DB), then prefer DA.

      Source addresses used for this test are "preferred address".

# TARGET

      Host and Router

# SYNOPSIS

      DstSelectRule6.seq [-tooloption ...] -pkt ADDR_SELECT.def
        -tooloption : v6eval tool option

# INITIALIZATION

      None

# TEST PROCEDURE

      This TEST performs the following Check procedures for
      every address group defined by Check 01 - *.

      *Check procedure

      1. Initialize :
         1.1. Set IPv6 Default Route in NUT
              (Default Router address = <TN-Link0-LinkLocalAddress>)
         1.2. Set DNS setting in NUT
         1.3. Add Candidate Source Addresses in NUT
         1.4. Check Candidate Source Addresses by Ping6 (TN->NUT)
      2. Send Ping6 from NUT to Destination(FQDN)
         2.1. NUT send DNS query (question) (NUT->TN)
         2.2. TN send DNS query (answer) (TN->NUT)
         2.3. NUT send ICMPv6 echo request (NUT->TN)
      3. Judgment :
         if (recive packet's Destination & Source Addresses)
         = (expected Destination & Source Addresses), Check pass
      4. Cleanup :
         4.1. Delete Candidate Source Addresses in NUT
         4.2. Clear prefix list & NCE & default router list in NUT
         4.3. Remove DNS setting in NUT

            NUT    TN  Default  DNS  Destination
             |      |  Router    |     |
             |      |      |     |     |
             ======(INITIALIZE)=========
             |      |      |     |     |
             |<-<-<-+      |     |     | Set IPv6 Default Route
             |<-<-<-+      |     |     | Set DNS setting
             |<-<-<-+      |     |     | Add Candidate Source Addresses
             |      |      |     |     |
             |<------------+     |     | Echo Request to Candidate Source Addresses 1
             +------------>|     |     | Echo Reply
             |      |      |     |     |
             |<------------+     |     | Echo Request to Candidate Source Addresses 2
             +------------>|     |     | Echo Reply
             |      |      |     |     |
             |<------------+     |     | Echo Request to Candidate Source Addresses 3
             +------------>|     |     | Echo Reply
             |      |      |     |     |
             ======(INITIALIZE)=========
             |      |      |     |     |
             |<-<-<-+      |     |     | Excute ping6 command
             |      |      |     |     |
             +------------------>|     | DNS query question
             <-------------------+     | DNS query answer
             +------------------------>| Echo Request
             |      |      |     |     |

      LLA(Link Local Address)

      *This test expected default policy table
      *Following address grouup does not match Rule 1-5

      Check 01:
        DNS Address: 3ffe::9
        Candidate Source Addresses: 3ffe::1 or 2002:c0a8:1::1 or fec0::1 or LLA
        Destination Address List: 2002:c0a8:1::2 or 3ffe::2
        Result: 3ffe::2 (src 3ffe::1) then 2002:c0a8:1::2 (src 2002:c0a8:1::1)

        If Precedence(3ffe::2) > Precedence(2002:c0a8:1::2), then prefer 3ffe::2.

# JUDGEMENT

      Check 01:
        PASS: Receive Echo Request & destination(source) = 3ffe::2(3ffe::1)

      TEST
        PASS: All Check = PASS

# SEE ALSO

      perldoc V6evalTool

      ADDR_SELECT.html "Default Address Selection for IPv6" Test Common Utility

      das_rules.html "Default Address Selection for IPv6" Rules