Switch to SpeakEasy.net DSL

The Modular Manual Browser

Home Page
Manual: (OpenBSD-3.6)
Apropos / Subsearch:
optional field

SLATTACH(8)             OpenBSD System Manager's Manual            SLATTACH(8)

     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 con-
     figured and up.  The following operands are supported by slattach:

     -h            Turn on RTS/CTS flow control.  By default, no flow control
                   is done.

     -m            Maintain modem control signals after closing the line.
                   Specifically, this disables HUPCL.

     -s baudrate   Specifies the speed of the connection.  If not specified,
                   the default of 9600 is used.

     ttyname       Specifies the name of the tty device.  ttyname should be a
                   string of the form ``ttyXX'', or ``/dev/ttyXX''.

     In addition, the following flags to ifconfig(8) control various proper-
     ties 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, automati-
                   cally 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 down'' after
     killing off the slattach process.  interface-name is the name that is
     shown by netstat(1).

           # ifconfig sl0 link0 link2 up
           # slattach ttyh8
           # ifconfig sl1 link0 up
           # slattach -s 4800 /dev/tty01

     Messages indicating the specified interface does not exist, the requested
     address is unknown, the user is not privileged and tried to alter an in-
     terface's configuration.

     netstat(1), netintro(4), ifconfig(8), rc(8)

     The slattach command appeared in 4.3BSD.

OpenBSD 3.6                      April 1, 1994                               1