dhcpcd problem in Gentoo

youngtaek.oh · 07-25-2005, 09:00 PM

I installed gentoo using stage-1 and everything was going well. but when I booted my system up, dhcpcd didn't work! At first, I thought it was due to my network connection, so I set my eth0 as 192.168.0.1 then started sshd. It worked really well, I could connect my gentoo system through eth0.

at boot time, the message is like this
*Bring up eth0 [Ok]
* dhcp
*dhcpcd [!!]
'netmount' blah blah~

I checked my "dmesg | eth" and there was no suspicious messages.
and "dhcpcd -d eth0" just gives me "MAC address : ~~~~~" and doesn't start.
There was no messages. That drives me really crazy

Do you have any idea about this problem? Please help me.
I'm using 3c591x driver which really works well in my Ubuntu and Gentoo Live CD system.

Matir · 07-25-2005, 10:40 PM

If you want to use static ips, make sure /etc/conf.d/net is configured as:

Code:

iface_eth0="192.168.0.2"

or some similar IP.

youngtaek.oh · 07-25-2005, 11:15 PM

Maybe my explanation is wrong. What I meant is I want to use DHCP in gentoo,

I already succeeded in static ip, but this is not what I want. I wonder there's no difference in /etc/conf.d/net between liveCD and mine but DHCP doesn't work.

I've already searched similar question, but solution for that was all about network card problem.
Is there anything do I have to do with dhcpcd except the options mentioned in manual?

Matir · 07-25-2005, 11:25 PM

Did you "emerge dhcpcd"?

syg00 · 07-25-2005, 11:59 PM

youngtaek.oh, be aware that this didn't used to be needed. If using an old copy of the handbook (say 2004.3) it won't be mentioned.
The (always) current one online does - section 9.f

youngtaek.oh · 07-27-2005, 12:08 AM

Thank you matir and syg00 but I've already "emerged dhcpcd" through the internet

(internet worked well in live CD) and consulted "The Gentoo Linux 2005.0 Handbooks".

After emerging dhcpcd, I edited /etc/conf.d/net like this

Code:

config_eth0=("dhcp")
dhcp_eth0="nodns nontp nonis"

Is there something wrong?
There was networking configuration in section 8.b and I tried iface_eth0, too.
Maybe I need to use another dhcp client rather than dhcpcd.

Matir · 07-27-2005, 12:24 AM

I'm not sure why you have the parentheses around "dhcp". Aditionally, I'm not sure what the nodns nontp and nonis options are about, I didn't see those in the handbook, but perhaps I'm wrong.

Can you make dhcpcd work from the command line?

syg00 · 07-27-2005, 01:41 AM

Unless you need those options remove the second line.
That section of the manual is *only* if you need to specify options with DHCP.

If you don't know (or aren't sure), you don't need them. Reread the network sections of the handbook.

youngtaek.oh · 07-27-2005, 08:18 AM

Well, Parentheses in dhcp was strange to me, too. but it is on the manual.

and second option which is "nodns nontp ... " I already tried with or without this option but it didn't work.

and command line dhcpcd does not give me any messages.

I installed gentoo from stage-1, so I think that is due to some kind of options like USE flag or Kernel Options.

Do you guys know what kind of options do I have to include? Gentoo is really hard to me

Matir · 07-27-2005, 08:44 AM

Try this as root:

Code:

ifconfig eth0 down
dhcpcd eth0
ifconfig eth0

And see if eth0 was able to obtain an IP address.

youngtaek.oh · 07-29-2005, 07:19 PM

Well, I tried but It didn't work.

As my last resort, I installed "dhclient". sometimes it worked and sometimes not.

I thinks it is due to my kernel configuration. do you know what kind of kernel options do i have to set?

I'm learning too much due to gentoo

Matir · 07-29-2005, 08:03 PM

The steps I outlined above didn't work? Those are as basic as dhcp requests get... it almost sounds like a problem with the server. One possible work around is to use 'dhcpcd -S', which helps with problems on some (broken) servers.

syg00 · 07-29-2005, 08:57 PM

You *DO* have a DHCP server correctly configured somewhere I hope.
Silly question I know, but you need something to provide the service. If you have your router set for static IP, and/or you don't have the correct gateway address on the Gentoo box, your client is swimming around in circles.

Matir · 07-29-2005, 09:02 PM

Quote:

Originally posted by syg00
You *DO* have a DHCP server correctly configured somewhere I hope.
Silly question I know, but you need something to provide the service. If you have your router set for static IP, and/or you don't have the correct gateway address on the Gentoo box, your client is swimming around in circles.

Actually, gateway addresses are provided by the DHCP server, but otherwise, you make an excellent point.

youngtaek.oh · 07-29-2005, 09:03 PM

Oh, I'm using xDSL which has DHCP function. it worked well in my ubuntu system and I don't think I can configure that xDSL modem. I'll try some more experiment then I'll ask you guys again thanks.