Mobile IPv6 uses IPsec to protect signaling between the home agent and the mobile node. Mobile IPv6 base document defines the main requirements these nodes must follow. This document discusses these requirements in more depth@ illustrates the used packet formats@ describes suitable configuration procedures@ and shows how implementations can process the packets in the right order.
RFC 3776-2004 history
2004RFC 3776-2004 Using IPsec to Protect Mobile IPv6 Signaling Between Mobile Nodes and Home Agents