In accordance with an example embodiment of the present invention, there is provided an apparatus, comprising at least one processing core configured to determine an opportunity for device-to-device, D2D, communication, and at least one transmitter configured to cause transmitting of a D2D communication request, wherein the D2D communication request at least one of comprises a radio resource control signaling message and comprises an indication of a type of D2D communication that is requested. The indicated type may comprise D2D communication with no fallback to cellular connectivity, wherein such a D2D communication can be established without involving a core network, CN.