Prune irrelevant verbiage.
[unix-history] / usr / src / share / man / man4 / lo.4
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1.\" Copyright (c) 1983 Regents of the University of California.
2.\" All rights reserved. The Berkeley software License Agreement
3.\" specifies the terms and conditions for redistribution.
4.\"
635a9a29 5.\" @(#)lo.4 6.1 (Berkeley) %G%
f4d488e2 6.\"
635a9a29 7.TH LO 4 ""
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8.UC 5
9.SH NAME
10lo \- software loopback network interface
11.SH SYNOPSIS
12.B pseudo-device loop
13.SH DESCRIPTION
14The
15.I loop
16interface is a software loopback mechanism which may be
17used for performance analysis, software testing, and/or local
18communication. By default, the loopback interface is
19accessible at address 127.0.0.1 (non-standard); this address
20may be changed with the SIOCSIFADDR ioctl.
21.SH DIAGNOSTICS
22\fBlo%d: can't handle af%d\fP. The interface was handed
23a message with addresses formatted in an unsuitable address
24family; the packet was dropped.
25.SH SEE ALSO
26intro(4N), inet(4F)
27.SH BUGS
28It should handle all address and protocol families.
29An approved network address should be reserved for this
30interface.