hvn(4)

hvn4

Hyper-v networking interface

Usage

hvn* at hyperv?

Overview

The hvn driver provides support for a Network Virtual Service Client (NetVSC), a virtual networking interface that relays device requests to the Virtual Service Provider (VSP) in the management operating system via the VMBus.

NetVSC emulates an RNDIS 1.0 compliant device on top of a custom NVS protocol operating over the VMBus channel ring.

Individual networking interfaces can be renamed by issuing a Rename-VMNetworkAdapter PowerShell command in the management domain. In order to enable sending and receiving of IEEE 802.1q (VLAN) frames, the virtual port needs to be put into Trunk mode with the Set-VMNetworkAdapterVlan command.

Releases

Unchanged in 21 releases since OpenBSD 6.1.

  1. 6.1–8.0

History

The hvn driver first appeared in OpenBSD 6.1.

Authors

The hvn driver was written by Mike Belopuhov ⟨[email protected]⟩ based on the FreeBSD driver by the Microsoft BSD Integration Services Team ⟨[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.