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Hiding Mobile Node's Location Movement Information (7)
Hiding CoA via Reverse Tunneling Mode
To hide its CoA from the CN and its HoA from an onlooker, the data packets between MN and CN traffic through HA in reverse tunneling mode. (modified according to Vijay comments)

In path MN-HA:
IPv6 header
source = CoA
destination = HA
ESP header in tunnel mode
IPv6 header
source = HoA
destination = CN
Payload

In path HA-CN:
IPv6 header
source = HoA
destination = CN
Payload
In path CN-HA:
IPv6 header
source = CN
destination = HoA
Payload

In path HA-MN:
IPv6 header
source = HA
destination = CoA
ESP header in tunnel mode
IPv6 header
source = CN
destination = HoA
Payload

PPT Version