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