Hi, [This message was posted to the z/VM and linux-390 message list as well] I am trying to call TCPIP service using IUCV. I found AF_IUCV which seemed to do what I want, but reading more into it it looks like AF_IUCV only ever implemented one-way SEND operations. Is that correct? There appears to exist a message_send and a message_send2way in the Linux IUCV interface, however only message_send appears to be used by AF_IUCV. If my reading is correct, is there any way I can work around this without writing a kernel module? Thanks