NAME

  EX_HdrProcessingOrder_HFD_10 - Extension Header Processing Order (Fragment Header precedes Destination Options Header, Error from Destination Options)

TARGET

  Host and Router

SYNOPSIS

  EX_HdrProcessingOrder_HFD_10.seq [-tooloption ...] -pkt EX_HdrProcessingOrder_HFD_10.def
    -tooloption : v6eval tool option

INITIALIZATION

  None

TEST PROCEDURE

  Tester                      Target
    |                           |
    |-------------------------->|
    |   Echo Request            |
    |                           |
    |                           |
    |<--------------------------|
    |   Neighbor Solicitation   |
    |                           |
    |                           |
    |-------------------------->|
    |   Neighbor Advertisement  |
    |                           |
    |                           | 
    |<--------------------------|
    |   ICMP Error              |
    |                           |
    |                           |
    v                           v

  1. Send Echo Request
  2. Wait ICMP Error or NS
  3. If NS received then send NA, and wait ICMP Error again
  4. Receive ICMP Error

  Echo Request Data is:

        IPv6 Header
            Version            = 6
            Traffic Class      = 0
            FlowLabel          = 0
            PayloadLength      = 37
            NextHeader         = 0 (Hop-by-Hop Options Header)
            SourceAddress      = Tester Link Local Address
            DestinationAddress = Target Link Local Address

        Hop-by-Hop Options Header
            NextHeader         = 44 (Fragment Header)
            HeaderExtLength    = 0
            OptionType         = 1 (PadN)
            OptDataLength      = 4
            pad                = {0, 0, 0, 0}

        Fragment Header
            NextHeader         = 60 (Destination Options Header)
            FragmentOffset     = 0
            MFlag              = 0
            FragmentID         = 104

        Destination Options Header
            NextHeader         = 58 (ICMPv6)
            HeaderExtLength    = 0
            OptionType         = 0x87 (Unrecognized Option, Type 10)
            OptDataLength      = 4 (for 8 octets alignment)
            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}

JUDGEMENT

  PASS: ICMP Error Received

        IPv6 Header
            Version             = 6
            Traffic Class       = 0
            FlowLabel           = 0
            PayloadLength       = 85
            NextHeader          = 58 (ICMPv6)
            SourceAddress       = Target Link Local Address
            Destination Address = Tester Link Local Address

        ICMP Error
            Type           = 4 (Parameter Problem)
            Code           = 2 (unrecognized IPv6 option encountered)
            Checksum       = (auto)
            Pointer        = 50 or 58 (Offset to Option Type field in Destination Options Header)
                                      (if this value is 50, the fragment header in Echo request is discarded by reassembly.)
            PayloadData    = (Sent Packet)

REFERENCE

RFC 2460 - IPv6 Specification