2# LAPB Data Link Drive
   5config LAPB
   6        tristate "LAPB Data Link Driver (EXPERIMENTAL)"
   7        depends on EXPERIMENTAL
   8        ---help---
   9          Link Access Procedure, Balanced (LAPB) is the data link layer (i.e.
  10          the lower) part of the X.25 protocol. It offers a reliable
  11          connection service to exchange data frames with one other host, and
  12          it is used to transport higher level protocols (mostly X.25 Packet
  13          Layer, the higher part of X.25, but others are possible as well).
  14          Usually, LAPB is used with specialized X.21 network cards, but Linux
  15          currently supports LAPB only over Ethernet connections. If you want
  16          to use LAPB connections over Ethernet, say Y here and to "LAPB over
  17          Ethernet driver" below. Read
  18          <file:Documentation/networking/lapb-module.txt> for technical
  19          details.
  21          To compile this driver as a module, choose M here: the
  22          module will be called lapb.  If unsure, say N.
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