eth0 not recognized:school system

[Tyler Littlefield]

hello,
sounds like it may help in the future, though my only networking card, 
(wireless or otherwise) is just ethernet, so not sure why it got renamed.
----- Original Message ----- 
From: "Kerry Hoath" <kerry at gotss.net>
To: "Speakup is a screen review system for Linux." <speakup at braille.uwo.ca>
Sent: Wednesday, February 25, 2009 9:37 PM
Subject: Re: eth0 not recognized:school system


> You might experience trouble eventually from obliterating udev, it seems 
> to be becoming more and more ingrained and it solves a lot of problems as 
> well as creating some interesting situations.
> I think hotplug is deprecated not sure.
> There is a good reason for the eth0 funnies, both why interfaces are 
> renamed and why they are locked in place.
> On a normal box you don't usually want a firewire interface showing up as 
> eth0, as the average user doesn't want to network with firewire.
>
> Also on a normal box when you boot the kernel without the udev magic 
> multiple ethernet interfaces are detected in the order the kernel finds 
> them. This means if you add a second card, eth0 can become eth1 and visa 
> versa.
> With udev, the mac address of eth0 is stored in the persistant rules file 
> and eth0 stays eth0 when you add a card.
> this can cause problems if you change the card in a box, eth0 will become 
> eth1, then if you change to a 3rd card it becomes eth2.
>
> You can fix this by removing the lines from 
> /etc/udev/rules.d/70-persistant-net-generator-rules
> not sure if I spelt that properly.
>
> This is important if you are creating virtual machines with Debian Ubuntu 
> or Gentoo and you clone the machine. When the Mac of the nic changes udev 
> assigns another interface name to the card.
> It is easy enough to remove the lines from the generator file and reboot 
> the machine to get eth0 back.
>
> I find that ifconfig -a is a good way to find out what udev has done to 
> your interfaces.
> Regards, Kerry.
>
> ----- Original Message ----- 
> From: "Tyler Littlefield" <tyler at tysdomain.com>
> To: "Speakup is a screen review system for Linux." 
> <speakup at braille.uwo.ca>
> Sent: Thursday, February 26, 2009 12:42 PM
> Subject: Re: eth0 not recognized:school system
>
>
>> hello,
>> I am replying to the first post in response I think, as that's the top of 
>> the thread for me.
>> Anyway, it was udev, and I just replaced it with hotplug.
>> More and more things seem to be breaiking with debian lately, now bash 
>> requires udev for completion if you upgrade bash, but udev isn't  a 
>> required package.
>> There's a ln hack you can use, but it seems like packages aren't coming 
>> with the proper dependencies.
>> Anyone else experiencing this problem?
>> I personally didn't mind udev--until it decided to rename nic interfaces, 
>> anyway. That broke a lot of scripts from startup and others.
>> ----- Original Message ----- 
>> From: "Gregory Nowak" <greg at romuald.net.eu.org>
>> To: "Speakup is a screen review system for Linux." 
>> <speakup at braille.uwo.ca>
>> Sent: Thursday, February 19, 2009 12:53 PM
>> Subject: Re: eth0 not recognized:school system
>>
>>
>>> -----BEGIN PGP SIGNED MESSAGE-----
>>> Hash: SHA1
>>>
>>> On Thu, Feb 19, 2009 at 09:07:33AM -0700, Tyler Littlefield wrote:
>>>> I'm trying to set up a linux system here at school at my lab station, 
>>>> and am using a cross over.
>>>
>>> Doesn't your school have an I/T department for doing that kind of
>>> stuff, or are they for windows only, or is setting up a gnu/linux
>>> system part of a course you're taking?
>>>
>>>> I installed linux and all that,
>>>
>>> "All that" isn't informative enough. What distribution?
>>>
>>>> but when I use ifconfig, it says that eth0 wasn't recognized.
>>>> I've tried:
>>>> inserting a NIC card in to the pci slot and using that.
>>>> I also tried the onboard card, and it's not recognizing.
>>>> Any ideas on how to get it to recognize? I've never had this problem 
>>>> before.
>>>
>>> What does dmesg say, if anything? Does linux have support for the
>>> card(s) you're trying to use, and if so, then is that support
>>> configured into your running kernel, either as modules, or built-in?
>>>
>>> Greg
>>>
>>>
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