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authorJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
committerJacob McDonnell <jacob@jacobmcdonnell.com>2026-04-25 19:55:15 -0400
commit253e67c8b3a72b3a4757fdbc5845297628db0a4a (patch)
treeadf53b66087aa30dfbf8bf391a1dadb044c3bf4d /static/netbsd/man8/slattach.8
parenta9157ce950dfe2fc30795d43b9d79b9d1bffc48b (diff)
docs: Added All NetBSD Manuals
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+.\" $NetBSD: slattach.8,v 1.30 2020/01/19 01:25:03 thorpej Exp $
+.\"
+.\" Copyright (c) 1986, 1991, 1993
+.\" The Regents of the University of California. All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\" notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\" notice, this list of conditions and the following disclaimer in the
+.\" documentation and/or other materials provided with the distribution.
+.\" 3. Neither the name of the University nor the names of its contributors
+.\" may be used to endorse or promote products derived from this software
+.\" without specific prior written permission.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+.\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
+.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\" @(#)slattach.8 8.2 (Berkeley) 4/1/94
+.\"
+.Dd January 18, 2020
+.Dt SLATTACH 8
+.Os
+.Sh NAME
+.Nm slattach
+.Nd attach serial lines as network interfaces
+.Sh SYNOPSIS
+.Nm
+.Op Fl Hhlmn
+.Op Fl s Ar baudrate
+.Op Fl t Ar ldisc
+.Ar ttyname
+.Sh DESCRIPTION
+.Nm
+is used to assign a tty line to a network interface which uses asynchronous
+serial lines.
+.Pp
+Currently the
+.Nm
+command is used to attach
+.Xr sl 4
+interfaces.
+These interfaces have to be created using the
+.Xr ifconfig 8 .
+The resulting point-to-point link is not a broadcast interface
+and normally has a netmask of 255.255.255.255.
+.Cm create
+subcommand before the
+.Nm
+command.
+The network source and destination addresses and other interface parameters
+are configured via
+.Xr ifconfig 8 .
+.Pp
+The following operands are supported by
+.Nm :
+.Bl -tag -width Ar
+.It Fl H
+Turn on DTR/CTS flow control.
+By default, no flow control is done.
+.It Fl h
+Turn on RTS/CTS flow control.
+By default, no flow control is done.
+.It Fl l
+Turn on the CLOCAL flag, making it possible to run SLIP on a cable
+without modem control signals (e.g. DTR, DSR, DCD).
+.It Fl m
+Maintain modem control signals after closing the line.
+Specifically, this disables HUPCL.
+.It Fl n
+Don't detach from invoking tty.
+.It Fl s Ar baudrate
+Specifies the speed of the connection.
+If not specified, the default of 9600 is used.
+.It Fl t Ar ldisc
+Specifies the line discipline to use for the tty.
+Supported line disciplines are
+.Dq slip
+(creates a
+.Xr sl 4
+instance).
+If this option is not specified, the default is
+.Dq slip .
+This option is retained for backwards compatibility with existing
+scripts.
+.It Ar ttyname
+Specifies the name of the tty device.
+.Ar ttyname
+should be a string of the form
+.Ql ttyXX ,
+or
+.Ql /dev/ttyXX .
+.El
+.Pp
+Only the super-user may attach a network interface.
+.Pp
+To detach the interface, use
+.Dq Li ifconfig interface-name down
+after killing off the
+.Nm
+process.
+.Ar Interface-name
+is the name that is shown by
+.Xr netstat 1 .
+.Sh EXAMPLES
+Lock, initialize, and attach a line (on both sides):
+.Bd -literal -offset indent -compact
+cu -t -F [hard|soft] -l /dev/dty00
+ifconfig sl0 create
+slattach -l -t slip /dev/dty00
+.Ed
+On the local side:
+.Bd -literal -offset indent -compact
+ifconfig sl0 inet 10.0.0.2 10.0.0.1 netmask 255.255.255.255
+.Ed
+On the remote side:
+.Bd -literal -offset indent -compact
+ifconfig sl0 inet 10.0.0.1 10.0.0.2 netmask 255.255.255.255
+.Ed
+.Sh DIAGNOSTICS
+Messages indicating that the specified interface is not configured or created,
+the requested address is unknown, or that the user is not privileged
+but tried to alter an interface's configuration.
+.Sh SEE ALSO
+.Xr netstat 1 ,
+.Xr daemon 3 ,
+.Xr netintro 4 ,
+.Xr sl 4 ,
+.Xr ifconfig 8 ,
+.Xr rc 8 ,
+.Xr sliplogin 8 ,
+.Xr slstats 8
+.Sh HISTORY
+The
+.Nm
+command appeared in
+.Bx 4.3 .
+.Sh BUGS
+There is no way to specify the interface name (sl%d etc.) to be attached by the
+.Nm
+command.
+There is no way to see which interface is assigned to the specified tty by the
+.Nm
+command, either.
+.Pp
+It would be better if the network interfaces were created by the
+.Nm
+command rather than by using the
+.Xr ifconfig 8
+.Cm create
+subcommand before the
+.Nm
+command.