NAME

  DO_MSB01 - Options Processing, Destination Options Header (Most Significant Bits 01)

TARGET

  Host and Router

SYNOPSIS

  DO_MSB01.seq [-tooloption ...] -pkt DO_MSB01.def
    -tooloption : v6eval tool option

INITIALIZATION

  None

TEST PROCEDURE

Verify that a node properly processes bot known and unknown options, and acts in accordance with the highest order two bits of the option.

   TN                          NUT
    |                           |
    |-------------------------->|
    |   Echo Request            |
    |                           |
    |                           |
    | (<----------------------) |
    |     No Packet             |
    |                           |
    |                           |
    v                           v

  1. TN transmits an Echo Request that has a Destination Options header with an unknown Option Type of 71.
  2. Observe the NUT.

  Echo Request Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 16
            NextHeader         = 60 (Destination Options Header)
            SourceAddress      = TN Link Local Address
            DestinationAddress = NUT Link Local Address

        Destination Options Header
            NextHeader         = 58 (ICMPv6)
            HeaderExtLength    = 0
            OptionType         = 0x47 (unknown, msb: 01)
            OptDataLength      = 4
            data               = {0, 0, 0, 0}

        ICMP Echo Request
            Type           = 128 (Echo Request)
            Code           = 0
            Checksum       = (auto)
            Identifier     = 0xffff
            SequenceNumber = 1
            PayloadData    = {1, 2, 3, 4, 5, 6, 7, 8}

JUDGEMENT

  PASS: The NUT must not generate any packets sent to TN. THe Echo Request is discarded.

CLEANUP

Common Test Cleanup

REFERENCE

RFC 8200 - IPv6 Specification