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tunctl(8)


NAME

   tunctl --- create and manage persistent TUN/TAP interfaces

SYNOPSIS

   tunctl [-f tun-clone-device]  [-u owner]  [-t device-name]

   tunctl [-f tun-clone-device]  -d device-name

DESCRIPTION

   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.

USAGE

   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

SEE ALSO

   The    UserModeLinux-HOWTO    (link    to     URL     http://user-mode-
   linux.sourceforge.net/UserModeLinux-HOWTO.html)

AUTHOR

   tunctl was written by Jeff Dike jdike@karaya.com

   This  manual  page was written by Matt Zimmerman mdz@debian.org for the
   Debian GNU/Linux system, based on examples from Jeff Dike.

                                                                 TUNCTL(8)



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