Enable support for childless IKE SA initiation allow prefer force never allow Accept childless IKE SA in responder mode. Create regular IKE SA in initiator mode prefer In both responder and initiator modes, accept and create childless IKE SA correspondingly force Require the use of childless IKE SA in both responder and initiator modes never Disable support for childless IKE SAs when acting as a responder (allow|prefer|force|never)