IKEv2 negotiation for Enhanced Encapsulating Security Payload (EESP)

This document specifies how to negotiate the use of the Enhanced Encapsulating Security Payload (EESP) protocol using the Internet Key Exchange protocol version 2 (IKEv2). The EESP protocol, which is defined in [I-D.ietf-ipsecme-eesp], provides the same security services as Encapsulating Security Payload (ESP), but has richer functionality and provides better performance in specific circumstances. This document specifies negotiation of version 0 of EESP.