slattach - attach serial lines as network interfaces
slattach [-hm] [-s baudrate] ttyname
slattach is used to assign a tty line to a network interface, and will
attach the named tty line to the first available slipdevice
that is configured
and up. The following operands are supported by
-h Turn on RTS/CTS flow control. By default, no
-m Maintain modem control signals after closing
Specifically, this disables HUPCL.
-s baudrate Specifies the speed of the connection. If not
the default of 9600 is used.
ttyname Specifies the name of the tty device. ttyname
should be a
string of the form ``ttyXX'', or
In addition, the following flags to ifconfig(8) control various properties
of the link:
link0 Turn on Van Jacobsen header compression.
-link0 Turn off header compression.
link1 Don't pass through ICMP packets.
-link1 Do pass through ICMP packets.
link2 If a packet with a compressed header is received, automatically
enable compression of outgoing packets.
-link2 Don't auto-enable compression.
Only the superuser may attach a network interface.
To detach the interface, use ``ifconfig interface-name
killing off the slattach process. interface-name is the
name that is
shown by netstat(1).
# ifconfig sl0 10.0.0.1 10.0.0.2 link0 link2 up
# slattach ttyh8
# ifconfig sl1 192.168.0.1 192.168.0.2 link0 up
# slattach -s 4800 /dev/tty01
Messages indicating the specified interface does not exist,
address is unknown, the user is not privileged and tried to
alter an interface's
netstat(1), netintro(4), ifconfig(8), rc(8)
The slattach command appeared in 4.3BSD.
OpenBSD 3.6 April 1, 1994
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