January 10, 2005 PPP 4

### NAME

ppp - point to point protocol network interface

### SYNOPSIS

options PPP_BSDCOMP options PPP_DEFLATE options PPP_FILTER

pseudo-device ppp

### DESCRIPTION

The ppp interface allows serial lines to be used as network interfaces using the Point-to-Point Protocol (PPP). The ppp interface can use various types of compression and has many features over the SLIP protocol used by the sl(4) interface.

Supported options are:

options PPP_BSDCOMP
  Enable support for BSD-compress (`bsdcomp') compression in ppp.
options PPP_DEFLATE
  Enable support for deflate compression in ppp.
options PPP_FILTER
  This option turns on pcap(3) based filtering for ppp connections. This option is used by pppd(8) which needs to be compiled with PPP_FILTER defined (the current default).

### DIAGNOSTICS

ppp%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), sl(4), pppd(8), pppstats(8)

### HISTORY

The ppp device appeared in NetBSD1.0.

### BUGS

Currently, only the ip(4) and ip6(4) protocols are supported.