It only works if your host PC doesn’t have a firewall enable. By using our services, you agree to our use of cookies. With a root NFS mount, networking has to be available when the kernel is booting. I did the following: The link will appear with a name like “usb0”, when the link is a two-node link, or “eth0” for most CDC-Ethernet devices. With ethtool version 1.

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All these are based on the same core hardware. These distributions have an ifup command that requires each device to be pre-configured, with a unique config file. Once you have everything right, exit the configurator and type: If you’re using Ubuntu or Debian, you’re lucky to have some decent examples of how to set up bridges as part of your “ifupdown” documentation.

Set the local assignment bit, 0x02 in the first octet, to ensure it still uses a name like “usb0” not “eth0”.

Linux source code: drivers/net/usb/usbnet.c (v) – Bootlin

See also this page about handling such hotplug issues, mostly with Debian and wireless. There are other USB 2. Like the Belkin device above, this one includes LEDs to show data traffic and errors; you’ll ussbnet to imagine them flashing:.

If that device talks like one of the host-to-host adapters listed above, a host won’t know it’s talking to a PDA that runs Linux directly.


I figured I’d leave these steps documented here, just in case it helps somebody else figures out what’s going on. Do NOT add the “usb d net” driver, just get the latest “usbnet” patch if you have one of the newest Zaurus models.

USBnet Setup – WebOS Internals

Without the path being setup, I got an error about framesyn. Some of those systems will run a real time OS, and lniux often use very specialized operating environments. How to add usbnet driver to the Linux kernel?

Here’s what one looks like. So now it re boots into the right configuration, but this setup won’t play nicely with RedHat’s tools. The network usbnett used in these explanations is the core of many such models that you will likely need to handle. There’s also a version of this in current versions of Busybox.

How to configure the Linux kernel/drivers/usb/net

You should usually set the netmask to Starting with Linux kernel 2. This is the default framing, used with most devices.

That ALI code seems to need a seven byte header that nobody’s taught Linux to use. The other is a “host” that sits on some LAN, and probably has Internet access.

In general, you’d rather automate such things. On your host PC, you need to make sure the Those cables are forbidden in USB, since the electrical connections don’t make any sense at all. Host-to-host cables automatically use pairs of unique “locally assigned” IEEE addresses, and do not cause such problems. The older plusb driver, found in 2. I modified the network startup code to bring up eth0 as the core of bridge, instead of calling “ifup”.


What do these devices look like inside? Highlighted letters are hotkeys. Again, the issue seems to be that queuing is pointlessly expensive compared to the extra copy needed to pack frames. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.

It can easily carry network traffic, multiplexing it along with all the other bus traffic. If I power on the gumstix and then unplug and replug the USB connector, then it gets recognized as connected. Thanks for your response. That will give you a big hint as to where to start looking for the problem. liinux