---
name: "vnet"
section: "4"
platform: "openbsd"
package: "man"
version: "8.0-current-20261101"
release: "OpenBSD 8.0-current (2026-11-01)"
platforms: ["openbsd"]
url: "https://new.carta.tech/vnet"
---

# vnet(4)

virtual network interface

## NAME

**vnet** – virtual network interface

## SYNOPSIS

**vnet\* at cbus?** **vnet\* at vsw?**

## DESCRIPTION

The **vnet** driver provides a network interface using the services provided by the UltraSPARC Hypervisor as found on sun4v systems. It connects to a virtual switch (vsw) device or virtual network (vnet) device in another logical domain using a logical domain channel provided by the hypervisor.

The **vnet** driver supports version 1.0 of the vNet protocol.

The **vnet** driver supports the following media types:

- autoselect

  Enable autoselection of the media type and options. The driver always uses the fastest available speed and the media options provided by the underlying host of the virtual machine.

For more information on configuring this device, see [ifconfig(8)](/ifconfig/8.md).

## SEE ALSO

[arp(4)](/arp/4.md), [cbus(4)](/cbus/4.md), [ifmedia(4)](/ifmedia/4.md), [intro(4)](/intro/4.md), [netintro(4)](/netintro/4.md), [vsw(4)](/vsw/4.md), [hostname.if(5)](/hostname.if/5.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **vnet** driver first appeared in OpenBSD 4.5.

## AUTHORS

The **vnet** driver was written by Mark Kettenis ⟨*kettenis@openbsd.org*⟩.