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Changes between 00 and 01 The Mobile Node can use any mechanism to authenticate the Home Agent The 00 version mandated public key based authentication Current default method is a shared secret between the MN and the HA SPD entries for dynamic keying explained in lot more detail A new requirement to update the SPD entries if the home address of the mobile node changes Added some text on how the mobility header type is negotiated by IKEv2 It is placed in the most significant 8 bits of the local port selector |