tunctl — create and manage persistent TUN/TAP interfaces
tunctl [-f tun-clone-device] [-u owner] [-t device-name]
tunctl [-f tun-clone-device] -d device-name
This manual page documents briefly the tunctl command.
This manual page was written for the Debian GNU/Linux distribution
because the original program does not have a manual page. Instead, it
has documentation in HTML format; see below.
tunctl allows the host sysadmin to preconfigure a TUN/TAP device for
use by a particular user. That user may open and use the device, but
may not change any aspects of the host side of the interface.
To create an interface for use by a particular user, invoke tunctl
without the -d option:
tunctl -u someuser
Set ’tap0’ persistent and owned by ’someuser’
Then, configure the interface as normal:
ifconfig tap0 192.168.0.254 up
route add -host 192.168.0.253 dev tap0
bash -c ’echo 1 > /proc/sys/net/ipv4/conf/tap0/proxy_arp’
arp -Ds 192.168.0.253 eth0 pub
To delete the interface, use the -d option:
tunctl -d tap0
Set ’tap0’ nonpersistent
The UserModeLinux-HOWTO (link to URL http://user-mode-
tunctl was written by Jeff Dike firstname.lastname@example.org
This manual page was written by Matt Zimmerman email@example.com for the
Debian GNU/Linux system, based on examples from Jeff Dike.