11.2.3. Required ifcfg Options for Linux on System z
11.2.3. Required ifcfg Options for Linux on System z NETTYPE = answer where answer is one of the following: ctc - Channel-to-Channel communication. For point-to-point TCP/IP or TTY. lcs - LAN Channel Station (LCS). qeth - QETH (QDIO Ethernet). This is the default network interface. It is the preferred installation method for supporting real or virtual OSA cards and HiperSockets devices.