pppx(4)

pppx4

Ppp multiplexer device

Usage

pseudo-device pppx

#include <sys/socket.h>

#include <sys/ioctl.h>

#include <net/pipex.h>

Overview

The pppx and pppac drivers works with the npppd(8) daemon to provide network interfaces for Point-to-Point Protocol (PPP) sessions by request from the daemon. pppx operates by allocating a network interface for each PPP session. pppac concentrates multiple PPP sessions on a single network interface. The interfaces also work with pipex(4) to accelerate the performance of data packet forwarding, and supports ioctls which are added by pipex(4).

To use pppx or pppac from npppd(8) the administrator needs to configure the interface configuration in npppd.conf(5). Also the administrator needs to enable pipex(4) by setting net.pipex.enable to ‘1’ using sysctl(8).

Releases

29 releases since OpenBSD 5.3; the text changed 3 times.

  1. 5.3
  2. 5.4–5.8
  3. 5.9–6.6
  4. 6.7–8.0

History

The pppx driver first appeared in OpenBSD 5.3. The pppac interface driver first appeared in OpenBSD 6.7.

Authors

David Gwynne ⟨[email protected]⟩ Claudio Jeker ⟨[email protected]⟩

From man 8.0-current-20261101 in OpenBSD 8.0-current (2026-11-01). Parsed by carta from the page's mdoc source.