Re: laptop restart eth0 automatically on plugin or on awake like a desktop

On 09/06/11 19:35, Brian wrote:
On Thu 09 Jun 2011 at 17:55:50 +0000, Camaleón wrote:

Hum... what happens when you attach a USB device to the computer? Kernel
detects it and DE mounts it based on user's settings. And what happens
when you dettach the key? Kernel (or udev, or both) remove/umount the
device.

You are talking about *devices* here.

I would have thought that something similar happens with an ethernet
device but I've lost the track to udev development and currently I would
not put my hand in the fire for what and how it does.

An ethernet cable is not a device.

But I like your turn of phrase. Go on, get your fingers burnt! udevadm(8)
and unplug and plug the cable back in. See any reaction from udev?

The question remains - Why would plugging or unplugging the ethernet
cable be expected to bring the interface up or down?

This sounds like a job for ifplugd

"ifplugd is a daemon which will automatically configure your ethernet device when a cable is plugged in and automatically de-configure it if the cable is pulled out. This is useful on laptops with onboard network adapters, since it will only configure the interface when a cable is really connected."

Caveat: I've not used ifplugd myself, I have a couple of custom scripts that do various things depending on which interface (Wired/Wireless) is available.
--
Dom


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