Hello,

I just installed slackware 9.1 on my pc. I have 2 network cards installed, eth0 is the 3c509b-tp0 and eth1 is a realtech 8139.

dhcpcd on eth1 obtains an ipaddress whenever I run it. (eth1 actually has a fixed address and does not run dhcpcd, but it can)

when I run dhcpcd on eth0, the card I need it to run on I do not get an ip address.
Here is what my logfiile on the pc running dhcpcd shows:

Jun 8 18:25:22 gimli kernel: eth0: Setting 3c5x9/3c5x9B half-duplex mode if_port: 0, sw_info: 1321
Jun 8 18:25:22 gimli kernel: eth0: Setting Rx mode to 0 addresses.
Jun 8 18:25:22 gimli kernel: eth0: Setting Rx mode to 1 addresses.
Jun 8 18:25:42 gimli dhcpcd[384]: timed out waiting for a valid DHCP server response

This is what the log of the dhcpd server shows:

Jun 9 21:37:43 arial dhcpd: DHCPREQUEST for 192.168.3.58 from 00:a0:24:8d:78:23 via eth0
Jun 9 21:38:11 arial last message repeated 3 times
Jun 9 21:38:43 arial dhcpd: DHCPDISCOVER from 00:a0:24:8d:78:23 via eth0
Jun 9 21:38:47 arial dhcpd: DHCPDISCOVER from 00:a0:24:8d:78:23 via eth0
Jun 9 21:38:48 arial dhcpd: DHCPOFFER on 192.168.3.73 to 00:a0:24:8d:78:23 via eth0
Jun 9 21:38:56 arial dhcpd: DHCPDISCOVER from 00:a0:24:8d:78:23 via eth0
Jun 9 21:38:57 arial dhcpd: DHCPOFFER on 192.168.3.74 to 00:a0:24:8d:78:23 via eth0
Jun 9 21:39:12 arial dhcpd: DHCPDISCOVER from 00:a0:24:8d:78:23 via eth0
Jun 9 21:39:13 arial dhcpd: DHCPOFFER on 192.168.3.75 to 00:a0:24:8d:78:23 via eth0


(please ignore the timestamps. new box has not been set yet)

The odd thing with this is if I assign a fixed ip to eth0 (ifconfig eth0 192.168.3.70) then eth0 work fine. I can ping through it, I can ping to it, I can route traffic throught box, (the box will be my firewall running iptables) so it appears that the nic is working well. I could switch nics, and run dhcpcd on eth1 but I would rather keep the 10-100 nic on the inside with a fixed address and the 10mb nic on the outside.

Other pc's running windows and linux accept dhcp from the server as well as eth1 in the new linux box.

Thanks for any help.
Eric

Some modems need to be powered off to release the previous mac address before using another nic

I have removed the modem from the machine., and no modem drivers have been compiled into the kernel. I tried changing the nic on eth0 to another 3c509b-tpo and still get the same problem. I verified that the correct MAC address was being sent in the request, and replied to.

I had simialr issue, found my IPTABLES scipt blocked ports 67/68

If you have IPTABLES take the time to look...might help.
http://www.linuxquestions.org/questi...hreadid=191916

Ive seen other posts where a broadcast route was needed for the interface that dhcpd was running I didnt have to enter this route to make mine work.

--justin

Thanks kennedy01.

I have looked at my iptables rule set and I think that this is not the trouble. I have all chains (input, forward, and output) configured as policy accept right now. After reading the link you provided however I think I need to look into iptables a bit more.

thanks.