NAME

CN-4-5-2 - Care-of Nonce Index error - De-Registration from the foreign link

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
        |       |       |       |       |
        |<------------------------------| 13.BA
        |       |       |       |       |
        |------------------------------>| 14.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 15.Echo Reply(Type2 Routing Header)
        |       |       |       |       |
        |-------------->|-------------->| 16.HoTI
        |       |       |       |       |
        |<--------------|<--------------| 17.HoT
        |       |       |       |       |
        |------------------------------>| 18.BU(Lifetime=0, Care-of Nonce Index=0xffff)
        |       |       |       |       |
        |<------------------------------| 19.BA(Status=0) (*1)
        |       |       |       |       |
        |------------------------------>| 20.Echo Request(Home Address option)
        |       |       |       |       |
        |<------------------------------| 21.BE(Status=1) (*2)
        |       |       |       |       |

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.
13. Receive Binding Acknowledgement
14. Send ICMP Echo Request(Home Address option).
15. Receive ICMP Echo Reply(Type2 Routing Header).
16. Send Home Test Init.
17. Receive Home Test.
18. Send Binding Update(Lifetime=0, Care-of Nonce Index=0xffff).
19. Receive Binding Acknowledgement(Status=0).
20. Send ICMP Echo Request(Home Address option).
21. Receive Binding Error(Status=1).

Packet Format
18. Binding Update
19. Binding Acknowledgement
20. ICMP_Echo Request(Home Address option)
21. Binding Error

JUDGEMENT

(*1) MN receives Binding Acknowledgement.
  - The Destination Address is set to the Source Address of the Binding Update (MN care-of address).
  - The Status field is set to 0.
  - Binding Authorization Data option is included.
  - Authenticator field of Binding Authorization Data option has the valid value.

(*2) MN receives Binding Error. (Binding Cache entry is deleted.)
  - 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)

9.5.1 Receiving Binding Updates

   o  A Nonce Indices mobility option MUST be present, and the Home and
      Care-of Nonce Index values in this option MUST be recent enough to
      be recognized by the correspondent node.  (Care-of Nonce Index
      values are not inspected for requests to delete a binding.)

      (snip)

   o  If the Lifetime specified in the Binding Update is zero or the
      specified care-of address matches the home address for the
      binding, then this is a request to delete the cached binding for
      the home address.  In this case, the Binding Update MUST include a
      valid home nonce index, and the care-of nonce index MUST be
      ignored by the correspondent node.  The generation of the binding
      management key depends then exclusively on the home keygen token
      (Section 5.2.5).  If the Home Registration (H) bit is set in the
      Binding Update, the Binding Update is processed according to the
      procedure specified in Section 10.3.2; otherwise, it is processed
      according to the procedure specified in Section 9.5.3.