Re: can't bring up eth0 correctly
"charles" == charles yoo <email@example.com> writes:
charles> I should have written /etc/network/interfaces. In
charles> reading a few things on the net, a lot of people
charles> suggested to have the autho eth0 commented out. This is
charles> for a laptop. I'm coming from redhat, and once dhcp is
charles> set, you can more or less leave it that way.
And so it is on Debian, but you need some additinal packages for the
laptop case where you plug/unplug cables frequently.
charles> All that I'm trying to do at the moment is get eth0 up
charles> and running. I get alerts saying that there is no such
charles> process or device.
Hmm....you are confusing issues here. Does 'ifup eth0' bring up your
ethernet device with a valid dhcp address or not? If not, your problem
is probably from recompiling your kernel and not including (a) the
correct driver or (b) not setting the packet filter options (this is
not redhat, so you use ISC DHCP unless you installed pump, by
charles> When I restart networking, I expect to see eth0 come up,
charles> but it doesn't.
That is as it should, because you commented out the 'auto eth0' line.
charles> In /etc/network/interfaces, I have the following
charles> I am basically looking to configure for dhcp only. I
charles> have removed netenv, because it did not seem to work too
charles> well for me. Maybe misconfigured.
Just add back the 'auto eth0' - removing it makes sense for PCMCIA
ethernet cards - and install laptop-net to ensure that dhcp does not
hang when you boot without a cable in the ethernet socket.
charles> -----Original Message----- From: Jason Kraftcheck
charles> [mailto:firstname.lastname@example.org] Sent: Monday, June 16,
charles> 2003 5:49 PM To: email@example.com Cc:
charles> firstname.lastname@example.org Subject: Re: can't bring
charles> up eth0 correctly
charles> charles yoo wrote:
>> I just went through my woody install on Inspiron 8200. On the
>> initial installation, it gets its ip via dhcp. All good. I
>> did an apt-get for the 2.4-18 kernel, recompiled it with some
>> changes, restart and no more. On ifconfig I see lo and eth0,
>> but I don't get anything.
>> In /etc/interfaces I have auto eth0 commented out and eth0 set
>> for dhcp.
charles> Shouldn't that be "/etc/network/interfaces"?
charles> I'm a little confused about what you are trying to do,
charles> and what exactly is failing. The line "auto eth0" that
charles> you commented out is the line that causes the interface
charles> to be configured on boot. It is quite common to not want
charles> the interface to be configured on boot for a laptop.
charles> However, if you remove the 'auto' entry, you need
charles> manually bring up the interface using 'ifup eth0'. Have
charles> you tried doing that?
>> If I manually try to assign the numbers it seems like it takes
>> it. But when I add route gateway, I get that there is no such
charles> Did you bring up the interface after setting the address?
charles> Presumably you are using ifconfig to set the address.
charles> Try "ifconfig eth0 up".
>> Any suggestions?
charles> Your /etc/network/interfaces file should look something
charles> like this:
charles> #auto eth0 iface eth0 inet dhcp
charles> You should then bring up the interface by doing: ifup
charles> If the interface fails to come up, check your system logs
charles> for error messages.
charles> I think you might need to post a bit more information
charles> before anyone can be any more specific with an answer.
charles> What is the network chip? Is it pcmcia/pccard or
charles> internal? What are the contents of your
charles> /etc/network/interfaces What commands are you using to
charles> set the IP address? What error message are you getting
charles> when you try to set the default route? What related
charles> error messages are you seeing in your syslog? What dhcp
charles> client do you have installed?
charles> -- jason
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