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draft-weniger-mobopts-mip6-cnlocpriv-00
Basic idea
MN reverse tunnels to HA that is preferably located:
Close to the CN (for strong location privacy)
Close to the path between MN and CN (for good routing efficiency)
This Optimized Routing Home Agent (ORHA) is used for optimized communication with CN


CN
IRHA
ORHA
CN sees HoA_OR (& HoA_IR)
reverse
tunneling
MN
PPT Version