CN-4-6-2 - Home Keygen Token error - De-Registration from the foreign link
Host
HA----------R2----------R1----------R0
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|---- |---- |----MN |----CN(NUT)
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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
Reboot NUT (reboot.rmt)
MN R1 HA R0 CN(NUT)
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| | | |------>| 1.RA
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| | | |------>| 2.NS
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| | | |<------| 3.NA
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|-------------->|-------------->| 4.Echo Request
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|<--------------|<--------------| 5.Echo Reply
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|------------------------------>| 6.Echo Request(Home Address option)
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|<------------------------------| 7.BE(Status=1)
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|------------------------------>| 8.CoTI
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|-------------->|-------------->| 9.HoTI
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|<------------------------------| 10.CoT
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|<--------------|<--------------| 11.HoT
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|------------------------------>| 12.BU
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|<------------------------------| 13.BA
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|------------------------------>| 14.Echo Request(Home Address option)
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|<------------------------------| 15.Echo Reply(Type2 Routing Header)
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|-------------->|-------------->| 16.HoTI
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|<--------------|<--------------| 17.HoT
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|------------------------------>| 18.BU(Lifetime=0,Authenticator=Calculated as if Home Keygen Token=0xffffffff)
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| | | | | (*1)
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|------------------------------>| 19.Echo Request(Home Address option)
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|<------------------------------| 20.Echo Reply(Type2 Routing Header) (*2)
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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,Authenticator=Calculated as if Home Keygen Token=0xffffffff). *Expire BA timer. 19. Send ICMP Echo Request(Home Address option). 20. Receive ICMP Echo Reply(Type2 Routing Header).
Packet Format 18. Binding Update 19. ICMP_Echo Request(Home Address option) 20. ICMP Echo Reply(Type2 Routing Header)
(*1) MN receives neither Binding Acknowledgement nor Binding Error.
(*2) MN receives ICMP Echo Reply. (Binding Cache entry is not deleted.) - The Destination Address is set to MN care-of address. - Type 2 Routing Header is included.
(draft-ietf-mobileip-ipv6-24.txt)
9.5.1 Receiving Binding Updates
o The Binding Authorization Data mobility option MUST be present,
and its contents MUST satisfy rules presented in Section 5.2.6.
Note that a care-of address different from the Source Address MAY
have been specified by including an Alternate Care-of Address
mobility option in the Binding Update. When such a message is
received and the return routability procedure is used as an
authorization method, the correspondent node MUST verify the
authenticator by using the address within the Alternate Care-of
Address in the calculations.
(snip)
For packets carrying Binding Updates that fail to satisfy all of these tests for any reason other than insufficiency of the Sequence Number, registration type change, or expired nonce index values, they MUST be silently discarded.