Re: Should IKEv2 negotiate new/old AH/ESP protocols?

Dan's right.  IKEv2 assumes use of the latest versions of AH and ESP. 
RFC 4301  requires IKEv2 because 4301 includes the ability to 
specific selectors that cannot be negotiated via IKEv1. There are a 
few other reasons for this matching, but I don't remember them right 
now.

Steve