FreeBSD Manual Pages
VDETAPLIB(1) General Commands Manual VDETAPLIB(1) NAME vdetaplib - Virtual Distributed Ethernet tap emulation library SYNOPSIS No synopsis DESCRIPTION vdetaplib is a library that emulates tap (tuntap level2 interface, see in kernel sources Documentation/networking/tun.c) and connects tap vir- tual interfaces to vde networks. To use it, the libvdetab.so library must be preloaded (sh, ksh or bash syntax): export LD_PRELOAD=/usr/local/lib/vde2/libvdetap.so (csh, tcsh syntax): setenv LD_PRELOAD /usr/local/lib/vde2/libvdetap.so If you want to divert all tap requests to a single vde_switch set the variable VDEALLTAP to the vde socket. (sh, ksh or bash syntax): export VDEALLTAP=/tmp/vde.ctl (csh, tcsh syntax): setenv VDEALLTAP /tmp/vde.ctl It is possible to set each single interface to different vde_switches by setting the environment variable with the same name of the inter- face. (sh, ksh or bash syntax): export tap0=/tmp/vde.ctl export tap1=/tmp/myvde.ctl export ppc=/tmp/ppc.ctl (csh, tcsh syntax): setenv tap0 /tmp/vde.ctl setenv tap1 /tmp/myvde.ctl setenv ppc /tmp/ppc.ctl It is also possible to specify port, group or mode for a given inter- face setting environment variables as in the following example. (sh, ksh or bash syntax): export tap0_port=5 export tap0_group=vde-net export tap0_mode=0660 (csh, tcsh, syntax): setenv tap0_port 5 setenv tap0_group vde-net setenv tap0_mode 0660 The variable to set the specific interface is checked first then VDEALLTAP. VDEALLTAP thus works as a default choice for the vde switch to be used. If VDEALLTAP is not set and there is no specific environ- ment variable (and for tun -- IFF_TUN interfaces) the kernel provided interface is used. In this latter case access to /dev/net/tun is re- quired, generally root access. NOTICE Virtual Distributed Ethernet is not related in any way with www.vde.com ("Verband der Elektrotechnik, Elektronik und Informationstechnik" i.e. the German "Association for Electrical, Electronic & Information Tech- nologies"). SEE ALSO vde_switch(1), vdeq(1). AUTHOR VDE is a project by Renzo Davoli <renzo@cs.unibo.it> Virtual Distributed Ethernet December 6, 2006 VDETAPLIB(1)
NAME | SYNOPSIS | DESCRIPTION | NOTICE | SEE ALSO | AUTHOR
Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=vdetaplib&sektion=1&manpath=FreeBSD+Ports+14.3.quarterly>