LO(4) | Device Drivers Manual | LO(4) |
lo
—
pseudo-device loop
loop
interface is a software loopback mechanism
which may be used for performance analysis, software testing, and/or local
communication.
A loop
interface can be created at runtime
using the ifconfig lo
N
create
command or by setting up a
hostname.if(5) configuration file
for netstart(8). The
lo0
interface will always exist and cannot be
destroyed using ifconfig(8).
As with other network interfaces, the loopback interface must have
network addresses assigned for each address family with which it is to be
used. These addresses may be set or changed with the
SIOCSIFADDR
ioctl(2).
lo
device appeared in
4.2BSD.April 29, 2018 | OpenBSD-current |