Yes, IKEv2 makes the SCTP ID_RECURSE thing unnecessary. Radia From: Jan Vilhuber <vilhuber@cisco.com> > Oh.. Right. I missed the part that there can be multiple 'Traffic Selector Substructure's. Very useful. If I read and understood it correctly this time, does this make the ID_RECURSE payload (Bad name.. did I already mention that?! ;) obsolete? At least for ikev2... jan