This draft discusses the issues associated with interfacing between
IKEv2/IPsec and MIPv6. When mobile nodes bootstrap in foreign network
or handover to a new network, IKEv2/IPsec can not probe the changing
of care-of-address, which is related security associations. One simple
extension to the SADB_ACQUIRE in PF_KEY framework is proposed to
support this interfacing. And the operation modification of IKEv2 and
MIPv6 are described in this proposal based on the SADB_ACQUIRE
extension. A new mobility security reference database is created to
store the temporary mobility parameters.