[ltp] fyi: booting without network

[Meidinger,Christopher]

 As a Windows Network Admin i've taken the plunge, killed windows, formatted
my hard drive, and installed Linux. So i hope this question is not idiotic.
Nonetheless, my solution for this under windows has always been 2 Hardware
Profiles, and the Network Card is simply not installed in one of them.
Seemed to be the cleanest to me. 

Does anyone have an idea whether this would be possible in Linux?

Thanks, Chris

-----Original Message-----
From: D. Sen
To: linux-thinkpad@www.bm-soft.com
Sent: 7/6/02 5:03 PM
Subject: Re: [ltp] fyi: booting without network

Thanks Robert. Thats a neat solution.

I guess a perfect solution is for a daemon which checks for network 
activity/electrical connection on the ethernet port in the background. 
This way it can call 'ifup ethX' when activity is detected. My typical 
usage profile involves connecting the laptop to a LAN at home and again 
a LAN at work. Right now, I have to manually ifup the ports at each 
location.

DS
Robert Andersson wrote:
> hi all!
> 
> i have got some help in the past from this mailing list so maybe i can
> contribute something. first, this is only for those bofhs out there
> who have non-admin linux thinkpad users :)
> 
> here's the setup, i have something around 30 thinkpad t30s, t22s, and
> t23s all of them dualbooting win2k and linux. running mandrake 8.1
> works just fine, most of the time, but when booting without any
> network it will take a long time for the eth0 to timeout, the mandrake
> team is aware of this problem though it's not fixed yet. so meanwhile
> i came up with an ad hoc solution --adding yet another boot
> alternative in the bootloader, "linux, no net" for my users. i use
> grub as a bootloader by the way.
> 
> as some of you already know, when passing boot prompt arguments of the
> format key=value that by the kernel is not accepted as a setup
> function will then become a environment variable. :)
> 
> so in my "linux, no net" boot option i will set bootwithoutnet=yes as
> an extra option, this will look like this in my grub menu.lst file
> 
>  title linux, no net
>  kernel (hd0,5)/boot/vmlinuz root=/dev/hda6 devfs=mount quiet vga=788
bootwithoutnet=yes
>  initrd (hd0,5)/boot/initrd.img
> 
> then in my /etc/init.d/network file i will check if the environment
> variable bootwithoutnet is set to yes like this
> 
>  if [ "${bootwithoutnet}" = "yes" ]; then
>  exit 0
>  fi
> 
> that's it. :) i also wrote a small shellscripts netup and netdown that
> brings up or down the net for my users using sudo...
> 
> yours,
> /robert
> 



-- 
D. Sen, PhD
http://www.auditorymodels.org/~dsen



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