VIRT(4)                 NetBSD Kernel Interfaces Manual                VIRT(4)

NAME
     virt -- rump virtual network interface

SYNOPSIS
     #include <rump/rump.h>

     int
     rump_pub_virtif_create(int num);

DESCRIPTION
     The virt interface acts as a link between a rump virtual kernel and a
     host tap(4) interface.  Interface number <n> always corresponds with the
     host tap interface tap<n>.  All data sent by virt is written into
     /dev/tap<n> and all data read from /dev/tap<n> is passed as Ethernet
     input to the rump virtual kernel.

     A virt interface can be created in two ways:

     ⊕   Programmatically by calling rump_pub_virtif_create().

     ⊕   Dynamically at runtime with ifconfig(8) or equivalent using the
         create command.

     Destroying a virt interface is possible only through ifconfig(8) destroy.

     The host's tap(4) interface can be further bridged with hardware inter-
     faces to provide full Internet access to a rump kernel.

SEE ALSO
     rump(3), bridge(4), tap(4), brconfig(8), ifconfig(8)

NetBSD 5.0                     November 15, 2010                    NetBSD 5.0