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Old 09-08-2004, 04:11 AM   #1
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[Debian Woody] Network down after compiling new kernel


perhaps this is a newbie-question, but I have been using Linux for a short time.

In Debian 3.0 r2 I downloaded the kernel-sources for kernel 2.6.7 and made the configuration via 'make menuconfig' for my specific hardware and requirements.

After 'make clean bzImage modules modules_install' I copied the new kernel-image to the /boot - folder, added the new kernel to /etc/lilo.conf and installed the new boot-configuration via '/sbin/lilo -C /etc/lilo.conf'

When I start the new kernel, my two network-devices (a NIC with rtl8139-chipset and a wlan-card with a prism2.5-chipset) are found by the drivers.

By running the command 'ifconfig' I can only see the loopback-device up and running.

When starting the old kernel 2.4.18, the eth0-device is started automatically and gets the configuration via DHCP.

But with the new kernel no device is set up at boot-time automatically.

Is there any config-file I have forgotten to change?

With ifconfig I can manually set up the device eth0, but after booting up the system the device is down

Last edited by neptunus; 09-08-2004 at 04:41 AM.
Old 09-08-2004, 05:39 AM   #2
Registered: Mar 2004
Location: Netherlands
Distribution: Debian
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Is your /etc/network/interfaces file still correct?


# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# This entry denotes the loopback ( interface.
auto lo
iface lo inet loopback

# This entry was created during the Debian installation
auto eth0
iface eth0 inet dhcp
auto eth1
iface eth1 inet static
Old 09-08-2004, 06:40 AM   #3
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thank you for your answer.

My /etc/network/interfaces file is correct.

In the file is written to get the ip-address for eth0 via DHCP.

I just found out that running the command 'dhclient' prints the error message 'Unrecognized kernel version' to screen.

So I think I have to update my dhclient to a version compatible to my kernel version 2.6.7. Is this correct?

How can I get and install a new dhclient?

Old 09-08-2004, 06:32 PM   #4
Registered: Oct 2003
Location: Newport News, Va
Distribution: Debian
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Most likley the modules aren't loaded (I am assuming you complied the drivers as modules) For the Realtek card the module is called 8139too as for the other network card I don't know what the module is. You need to add 8139too to /etc/modules. You can do that by typing
echo "8139too" >> /etc/modules
When you reboot the module will be loaded automatically, however you can load the module without rebooting by typing
modprobe 8139too
Next you need to find out what the module is called for your other card and run the same commands above replacing 8139too with the proper module name.
Old 09-09-2004, 05:17 AM   #5
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Currently I already have solved my problem.

I just had to install the package dhcp3-client which is compatible with my new kernel version 2.6.7


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