1.\" $OpenBSD: ppp.4,v 1.17 2024/02/28 16:08:34 denis Exp $ 2.\" 3.\" Copyright (c) 1983, 1991, 1993 4.\" The Regents of the University of California. All rights reserved. 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 1. Redistributions of source code must retain the above copyright 10.\" notice, this list of conditions and the following disclaimer. 11.\" 2. Redistributions in binary form must reproduce the above copyright 12.\" notice, this list of conditions and the following disclaimer in the 13.\" documentation and/or other materials provided with the distribution. 14.\" 3. Neither the name of the University nor the names of its contributors 15.\" may be used to endorse or promote products derived from this software 16.\" without specific prior written permission. 17.\" 18.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 19.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 20.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 21.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 22.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 23.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 24.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 25.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 26.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 27.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 28.\" SUCH DAMAGE. 29.\" 30.\" From: @(#)lo.4 8.1 (Berkeley) 6/5/93 31.\" 32.Dd $Mdocdate: February 28 2024 $ 33.Dt PPP 4 34.Os 35.Sh NAME 36.Nm ppp 37.Nd Point-to-Point Protocol network interface 38.Sh SYNOPSIS 39.Cd "pseudo-device ppp" 40.Sh DESCRIPTION 41The 42.Nm 43interface allows serial lines to be used as network interfaces using the 44.Em Point-to-Point Protocol 45(PPP). 46.Pp 47A 48.Nm 49interface can be created at runtime using the 50.Ic ifconfig ppp Ns Ar N Ic create 51command or by setting up a 52.Xr hostname.if 5 53configuration file for 54.Xr netstart 8 . 55.Sh DIAGNOSTICS 56.Bl -diag 57.It ppp0: afX not supported 58The interface was handed 59a message with addresses formatted in an unsuitable address 60family; the packet was dropped. 61.El 62.Sh SEE ALSO 63.Xr inet 4 , 64.Xr pppoe 4 , 65.Xr pppx 4 , 66.Xr hostname.if 5 , 67.Xr ifconfig 8 , 68.Xr netstart 8 , 69.Xr pppd 8 , 70.Xr pppstats 8 71.Sh STANDARDS 72.Rs 73.%A W. Simpson 74.%D July 1994 75.%R RFC 1661 76.%T The Point-to-Point Protocol (PPP) 77.Re 78.Sh HISTORY 79The 80.Nm 81device appeared in 82.Ox 1.2 . 83