SL(4) MidnightBSD Kernel Interfaces Manual SL(4)

NAME

sl — slip network interface

SYNOPSIS

device sl [count]

DESCRIPTION

The sl interface allows serial lines to be used as network interfaces using the slip protocol. The sl interface can use Van Jacobson TCP header compression and ICMP filtering. This is arranged by using the various link-level flags to the ifconfig(8) command:

link0

Enable VJ header compression.

link1

Suppress ICMP traffic.

link2

Enable VJ header compression autodetection. This will turn on the link0 flag as soon as the first VJ-compressed packet has been seen by the driver.

DIAGNOSTICS

sl%d: af%d not supported.  The interface was handed a message with addresses formatted in an unsuitable address family; the packet was dropped.

SEE ALSO

inet(4), intro(4), slattach(8), sliplogin(8), slstat(8)

MidnightBSD 0.3 August 10, 1996 MidnightBSD 0.3