1.\" $NetBSD: slattach.8,v 1.25 2002/10/03 15:41:47 wiz Exp $ 2.\" 3.\" Copyright (c) 1986, 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. All advertising materials mentioning features or use of this software 15.\" must display the following acknowledgement: 16.\" This product includes software developed by the University of 17.\" California, Berkeley and its contributors. 18.\" 4. Neither the name of the University nor the names of its contributors 19.\" may be used to endorse or promote products derived from this software 20.\" without specific prior written permission. 21.\" 22.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 23.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 24.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 25.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 26.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 27.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 28.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 29.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 30.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 31.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 32.\" SUCH DAMAGE. 33.\" 34.\" @(#)slattach.8 8.2 (Berkeley) 4/1/94 35.\" 36.Dd September 3, 1999 37.Dt SLATTACH 8 38.Os 39.Sh NAME 40.Nm slattach , 41.Nm slip 42.Nd attach serial lines as network interfaces 43.Sh SYNOPSIS 44.Nm 45.Op Fl Hhlmn 46.Op Fl s Ar baudrate 47.Op Fl t Ar ldisc 48.Ar ttyname 49.Sh DESCRIPTION 50.Nm 51is used to assign a tty line to a network interface, 52and to define the network source and destination addresses. 53The following operands are supported by 54.Nm "" : 55.Bl -tag -width Ar 56.It Fl H 57Turn on DTR/CTS flow control. 58By default, no flow control is done. 59.It Fl h 60Turn on RTS/CTS flow control. 61By default, no flow control is done. 62.It Fl l 63Turn on the CLOCAL flag, making it possible to run SLIP on a cable 64without modem control signals (e.g. DTR, DSR, DCD). 65.It Fl m 66Maintain modem control signals after closing the line. 67Specifically, this disables HUPCL. 68.It Fl n 69Don't detach from invoking tty. 70.It Fl s Ar baudrate 71Specifies the speed of the connection. 72If not specified, the default of 9600 is used. 73.It Fl t Ar ldisc 74Specifies the line discipline to use for the tty. 75Supported line disciplines are 76.Dq slip 77(creates a 78.Xr sl 4 79instance) and 80.Dq strip 81(creates a 82.Xr strip 4 83instance). 84If this option is not specified, the default is 85.Dq slip . 86.It Ar ttyname 87Specifies the name of the tty device. 88.Ar ttyname 89should be a string of the form 90.Ql ttyXX , 91or 92.Ql /dev/ttyXX . 93.El 94.Pp 95In addition, the following flags to 96.Xr ifconfig 8 97control various properties of a SLIP link: 98.Bl -tag -width Ar 99.It Ar link0 100Turn on Van Jacobsen header compression. 101.It Ar -link0 102Turn off header compression. 103.It Ar link1 104Don't pass through ICMP packets. 105.It Ar -link1 106Do pass through ICMP packets. 107.It Ar link2 108If a packet with a compressed header is received, automatically enable 109compression of outgoing packets. 110.It Ar -link2 111Don't auto-enable compression. 112.El 113.Pp 114Only the super-user may attach a network interface. 115.Pp 116To detach the interface, use 117.Dq Li ifconfig interface-name down 118after killing off the 119.Nm 120process. 121.Ar Interface-name 122is the name that is shown by 123.Xr netstat 1 . 124.Sh EXAMPLES 125.Bd -literal -offset indent -compact 126slattach ttyh8 127slattach \-s 4800 /dev/tty01 128.Ed 129.Sh DIAGNOSTICS 130Messages indicating that the specified interface does not exist, the 131requested address is unknown, or that the user is not privileged but 132tried to alter an interface's configuration. 133.Sh SEE ALSO 134.Xr netstat 1 , 135.Xr daemon 3 , 136.Xr netintro 4 , 137.Xr sl 4 , 138.Xr strip 4 , 139.Xr ifconfig 8 , 140.Xr rc 8 141.Sh HISTORY 142The 143.Nm 144command appeared in 145.Bx 4.3 . 146