tunctl: tunctl (tool for controlling the TUN/TAP driver in Linux) tunctl: tunctl: tunctl is used to set up and maintain persistent TUN/TAP tunctl: network interfaces, enabling user applications to simulate tunctl: network traffic. Such interfaces is useful for VPN software, tunctl: virtualization, emulation, simulation, and a number of other tunctl: applications. tunctl: tunctl: tunctl: tunctl: