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  1 #
  2 # SLIP network device configuration
  3 #
  5 config SLIP
  6         tristate "SLIP (serial line) support"
  7         depends on TTY
  8         ---help---
  9           Say Y if you intend to use SLIP or CSLIP (compressed SLIP) to
 10           connect to your Internet service provider or to connect to some
 11           other local Unix box or if you want to configure your Linux box as a
 12           Slip/CSlip server for other people to dial in. SLIP (Serial Line
 13           Internet Protocol) is a protocol used to send Internet traffic over
 14           serial connections such as telephone lines or null modem cables;
 15           nowadays, the protocol PPP is more commonly used for this same
 16           purpose.
 18           Normally, your access provider has to support SLIP in order for you
 19           to be able to use it, but there is now a SLIP emulator called SLiRP
 20           around (available from
 21           <>) which
 22           allows you to use SLIP over a regular dial up shell connection. If
 23           you plan to use SLiRP, make sure to say Y to CSLIP, below. The
 24           NET-3-HOWTO, available from
 25           <>, explains how to
 26           configure SLIP. Note that you don't need this option if you just
 27           want to run term (term is a program which gives you almost full
 28           Internet connectivity if you have a regular dial up shell account on
 29           some Internet connected Unix computer. Read
 30           <>). SLIP
 31           support will enlarge your kernel by about 4 KB. If unsure, say N.
 33           To compile this driver as a module, choose M here. The module
 34           will be called slip.
 36 config SLHC
 37         tristate
 38         ---help---
 39           This option enables Van Jacobsen serial line header compression
 40           routines.
 42 if SLIP
 45         bool "CSLIP compressed headers"
 46         depends on SLIP
 47         select SLHC
 48         ---help---
 49           This protocol is faster than SLIP because it uses compression on the
 50           TCP/IP headers (not on the data itself), but it has to be supported
 51           on both ends. Ask your access provider if you are not sure and
 52           answer Y, just in case. You will still be able to use plain SLIP. If
 53           you plan to use SLiRP, the SLIP emulator (available from
 54           <>) which
 55           allows you to use SLIP over a regular dial up shell connection, you
 56           definitely want to say Y here. The NET-3-HOWTO, available from
 57           <>, explains how to configure
 58           CSLIP. This won't enlarge your kernel.
 60 config SLIP_SMART
 61         bool "Keepalive and linefill"
 62         depends on SLIP
 63         ---help---
 64           Adds additional capabilities to the SLIP driver to support the
 65           RELCOM line fill and keepalive monitoring. Ideal on poor quality
 66           analogue lines.
 68 config SLIP_MODE_SLIP6
 69         bool "Six bit SLIP encapsulation"
 70         depends on SLIP
 71         ---help---
 72           Just occasionally you may need to run IP over hostile serial
 73           networks that don't pass all control characters or are only seven
 74           bit. Saying Y here adds an extra mode you can use with SLIP:
 75           "slip6". In this mode, SLIP will only send normal ASCII symbols over
 76           the serial device. Naturally, this has to be supported at the other
 77           end of the link as well. It's good enough, for example, to run IP
 78           over the async ports of a Camtec JNT Pad. If unsure, say N.
 80 endif # SLIP

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