---
name: "url"
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/url/4"
---

# url(4)

Realtek RTL8150L 10/100 USB Ethernet device

## NAME

**url** – Realtek RTL8150L 10/100 USB Ethernet device

## SYNOPSIS

**url\*    at uhub?** **urlphy\* at mii?**

## DESCRIPTION

The **url** driver provides support for USB Ethernet adapters based on the Realtek RTL8150L USB-ether bridge chip.

The **url** driver supports the following adapters:

- Abocom RTL8151

  - BAFO BF-310

  - Billionton USBKR-100

  - Compex UE202-B

  - GreenHouse GH-USB100B

  - GreenHouse GH-USB100B with HomePNA

  - Hawking Technology HUF11

  - Linksys USB100M

  - Longshine LCS-8138TX

  - Melco Inc. LUA-KTX

  - Micronet SP128AR

  - NetComm NP1010

  - OQO model 01 (10/100) Ethernet

  - Repotec RP-USB100-A

  - SMC 2208USB/ETH

  - TRENDnet TU-ET100C

  - Zt USB10/100

  - ZyXEL Prestige

  - Z-TEK ZK-R02

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

## DIAGNOSTICS

- url0: watchdog timeout

  A packet was queued for transmission and a transmit command was issued, however the device failed to acknowledge the transmission before a timeout expired.

- url0: no memory for rx list

  The driver failed to allocate an mbuf for the receiver ring.

## SEE ALSO

[arp(4)](/arp/4.md), [ifmedia(4)](/ifmedia/4.md), [mii(4)](/mii/4.md), [netintro(4)](/netintro/4.md), uhub(4), [usb(4)](/usb/4.md), [hostname.if(5)](/hostname.if/5.md), [ifconfig(8)](/ifconfig/8.md)

## HISTORY

The **url** device driver first appeared in OpenBSD 3.2.

## AUTHORS

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