NAME

CN-2-6-3 - Receiving BU with invalid Address - Alternate Care-of Address (Registration)

TARGET

Host

TOPOLOGY

       HA----------R2----------R1----------R0
       |           |           |           |
       |           |           |           |
       |----       |----       |----MN     |----CN(NUT)
       |           |           |           |
       |           |           |           |
   Home Link     Link2       Link1       Link0
               (Foreign)   (Foreign)

Link0	3ffe:501:ffff:100::/64
Link1	3ffe:501:ffff:101::/64	Foreign Link
Link2	3ffe:501:ffff:102::/64	Foreign Link 2
Home Link	3ffe:501:ffff:104::/64	Home Link
CN(NUT)	3ffe:501:ffff:100::X Auto Configuration (InterfaceID)
MN(in Link1)	3ffe:501:ffff:101::Y Increased in each test (InterfaceID)	MN care-of address
MN(in Home Link)	3ffe:501:ffff:104::Y Increased in each test (InterfaceID)	MN home address
R0(Link0)	3ffe:501:ffff:100::1
R1(Link1)	3ffe:501:ffff:101::1
R2(Link2)	3ffe:501:ffff:102::1
HA(Home Link)	3ffe:501:ffff:104::1

INITIALIZATION

Reboot NUT (reboot.rmt)

TEST PROCEDURE

       MN      R1      HA      R0     CN(NUT) 
        |       |       |       |       |
        |       |       |       |------>| 1.RA
        |       |       |       |       |
        |       |       |       |------>| 2.NS
        |       |       |       |       |
        |       |       |       |<------| 3.NA
        |       |       |       |       |
        |-------------->|-------------->| 4.Echo Request
        |       |       |       |       |
        |<--------------|<--------------| 5.Echo Reply
        |       |       |       |       |
        |------------------------------>| 6.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 7.BE(Status=1)
        |       |       |       |       |
        |------------------------------>| 8.CoTI
        |       |       |       |       |
        |-------------->|-------------->| 9.HoTI
        |       |       |       |       |
        |<------------------------------| 10.CoT
        |       |       |       |       |
        |<--------------|<--------------| 11.HoT
        |       |       |       |       |
        |------------------------------>| 12.BU(Alternate Care-of Addres=Multicust address)
        |       |       |       |       |
        |       |       |       |       | (*1)
        |       |       |       |       |
        |------------------------------>| 13.BU(Alternate Care-of Addres=Link local address)
        |       |       |       |       |
        |       |       |       |       | (*2)
        |       |       |       |       |
        |------------------------------>| 14.BU(Alternate Care-of Addres=Invalid fp)
        |       |       |       |       |
        |       |       |       |       | (*3)
        |       |       |       |       |
        |------------------------------>| 15.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 16.BE(Status=1) (*4)
        |       |       |       |       |

1. Send Router Advertisement.
2. Send Neighbor Solicitation.
3. Receive Neighbor Advertisement.
4. Send ICMP Echo Request.
5. Receive ICMP Echo Reply.
6. Send ICMP Echo Request(Home Address option).
7. Receive Binding Error(Status=1).
8. Send Care-of Test Init
9. Send Home Test Init
10. Receive Care-of Test.
11. Receive Home Test.
12. Send Binding Update(Alternate Care-of Addres=Multicust address).
   *Expire BA timer.
13. Send Binding Update(Alternate Care-of Addres=Link local address).
   *Expire BA timer.
14. Send Binding Update(Alternate Care-of Addres=Invalid fp).
   *Expire BA timer.
15. Send ICMP Echo Request(Home Address option).
16. Receive Binding Error(Status=1).

Packet Format
12.13.14. Binding Update(Alternate Care-of Address option)
      IPv6 header
      Destination Options header
         Home Address option
      Mobility header
         Binding Update
            Alternate Care-of Address option
            Nonce Indices option
            Binding Authorization Data option
15. ICMP_Echo Request(Home Address option)
16. Binding Error

JUDGEMENT

(*1) MN receives neither Binding Acknowledgement nor Binding Error.

(*2) MN receives neither Binding Acknowledgement nor Binding Error.

(*3) MN receives neither Binding Acknowledgement nor Binding Error.

(*4) MN receives Binding Error. (Binding Cache entry is not created.)
  - The Destination Address is set to the Source Address of ICMP Echo Request (MN care-of address).
  - The Status field is set to 1.

REFERENCE

(draft-ietf-mobileip-ipv6-24.txt)

6.1.7 Binding Update Message

   The care-of address is specified either by the Source Address field
   in the IPv6 header or by the Alternate Care-of Address option, if
   present.  The care-of address MUST be a unicast routable address.
   IPv6 Source Address MUST be a topologically correct source address.
   Binding Updates for a care-of address which is not a unicast routable
   address MUST be silently discarded.  Similarly, the Binding Update
   MUST be silently discarded if the care-of address appears as a home
   address in an existing Binding Cache entry, with its current location
   creating a circular reference back to the home address specified in
   the Binding Update (possibly through additional entries).