Not any longer. cipe has never been part of upstream kernel, and, in the switch to 2.6, since we got IPSec, and given the security flaws that exist in cipe, there was a decision to not add it to the 2.6 kernel in FC. Unfortunately, IPSec is not compatible with Cipe, and doesn't offer all of the same features (the one I miss the most is the ability to establish secure channel with a network whose gateway has a dynamically-assigned IP), but AFAIK the decision has already been made.