07-02-2009
As you said ether add we will specify in ifconfig command.
then how to decide that value for every different interface ?
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VIRT(4) BSD 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:
o Programmatically by calling rump_pub_virtif_create().
o 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 interfaces to provide full Internet access to a rump kernel.
SEE ALSO
rump(3), bridge(4), tap(4), brconfig(8), ifconfig(8)
BSD
November 15, 2010 BSD