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Signaling flow for CN-initiated sessions MN CN ORHA ORHA discovery MIP bootstrapping (incl. obtaining HoA_OR) BU (HoA_OR, CoA) CoT IRHA BU (HoA_IR, CoA) Data packets HoTi HoT CoTi Data packets BU (HoA_IR, HoA_OR) Decision to optimize route Session starts (sending to HoA_IR) |