Hi Cheryl, You wrote: Well, some of us take the view that this is still really part of IKE, just in a roundabout way (e.g. this whole "special short-lived tunnel" stuff). >> I have difficulties in understanding what is against short-lived tunnels. Isn't this is one of the reasons of existence of IKE i.e. a protocol that can easily create and destroy tunnels ? >> Best regards - Dirk