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UDAV(4) Device Drivers Manual UDAV(4)

Davicom DM9601 10/100 USB Ethernet device

udav* at uhub?
amphy* at mii?

The udav driver provides support for USB Ethernet adapters based on the Davicom DM9601 USB-ether bridge chip.
The udav driver supports the following adapters:
Corega FEther USB-TXC
HenTong WK-668
ShanTou ST268
ShanTou ZT6688
ShanTou ADM8515
The udav driver also supports CoreChip RD9700. As many of these units ship with the same MAC address, it is highly recommended to use ifconfig(8) lladdr to set the address manually, or lladdr random to assign a random address.
For more information on configuring this device, see ifconfig(8).

amphy(4), arp(4), ifmedia(4), mii(4), netintro(4), uhub(4), usb(4), hostname.if(5), ifconfig(8)
Davicom DM9601 data sheet, http://www.davicom.com.tw/big5/download/Data%20Sheet/DM9601-DS-P01-930914.pdf.

The udav device driver first appeared in OpenBSD 3.7.

The udav driver was written by Shingo WATANABE <nabe@nabechan.org> and ported to OpenBSD by Jonathan Gray <jsg@openbsd.org>.
RD9700 support by Takayoshi SASANO <uaa@uaa.org.uk>.

The RD9700 sometimes lacks zero-length packets to terminate USB trancactions, which can cause USB IOERRORs.
January 28, 2014 OpenBSD-5.6