vether(4)

vether4

Virtual ethernet interface

Usage

pseudo-device vether

Overview

The vether interface simulates a normal Ethernet interface by encapsulating standard network frames with an Ethernet header, specifically for use as a member in a bridge(4).

To use vether the administrator needs to configure an address onto the interface so that packets can be routed to it. An Ethernet header will be prepended and, if the vether interface is a member of a bridge(4), the frame will show up there.

Releases

35 releases since OpenBSD 4.7; the text changed 2 times.

  1. 4.7–5.4
  2. 5.5–6.2
  3. 6.3–8.0

History

The vether interface first appeared in OpenBSD 4.7.

Authors

Theo de Raadt ⟨[email protected]⟩

Bugs

Like tun(4), the Ethernet address chosen will be partially random, and may occasionally collide with another address.

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