---
name: "if_udav"
section: "4"
platform: "freebsd"
package: "base"
version: "16.0-CURRENT-20261027-61c70dc16a79"
release: "FreeBSD 16.0-CURRENT (2026-10-27)"
platforms: ["linux", "freebsd"]
url: "https://new.carta.tech/if_udav"
---

# if\_udav(4)

Davicom DM9601 USB Fast Ethernet driver

## NAME

**udav** – Davicom DM9601 USB Fast Ethernet driver

## SYNOPSIS

**device** **ehci** **device** **uhci** **device** **ohci** **device** **usb** **device** **miibus** **device** **uether** **device** **udav**

In [loader.conf(5)](/loader.conf/5.md): **if\_udav\_load="YES"**

## HARDWARE

The **udav** driver supports the following USB Fast Ethernet adapters:

- Corega FEther USB-TXC

- ShanTou ST268 USB NIC

## DESCRIPTION

The **udav** driver provides support for USB Ethernet adapters based on the Davicom DM9601 chipset.

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

## SEE ALSO

[altq(4)](/altq/4.md), [arp(4)](/arp/4.md), [miibus(4)](/miibus/4.md), [netintro(4)](/netintro/4.md), [ng\_ether(4)](/ng_ether/4.md), [usb(4)](/usb/4.md), [ifconfig(8)](/ifconfig/8.md) *Davicom DM9601 data sheet*, http://ptm2.cc.utu.fi/ftp/network/cards/DM9601/From\_NET/DM9601-DS-P01-930914.pdf.

## HISTORY

The **udav** device driver first appeared in NetBSD 2.0.

## AUTHORS

The **udav** driver was written by Shingo WATANABE ⟨*nabe@nabechan.org*⟩.