LO(4) | Device Drivers Manual | LO(4) |
lo
— software
loopback network interface
pseudo-device loop
The 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).
inet(4), inet6(4), netintro(4), hostname.if(5), ifconfig(8), netstart(8)
The lo
device appeared in
4.2BSD.
April 29, 2018 | OpenBSD-6.9 |