DHCP will not grab ip.

Alex Makhlin makhlina at gmail.com
Thu Oct 9 13:51:54 UTC 2008


Mark Haney wrote:
> Laura Speck wrote:
>> 2008/10/9 Michael Magua <mmglug at gmail.com>:
>>> On Thu, Oct 9, 2008 at 12:15 AM, Dave Feustel <dfeustel at mindspring.com>
>>> wrote:
>>>> On Wed, Oct 08, 2008 at 10:20:17PM +0100, Laura Speck wrote:
>>>>> Hey all,
>>>>>
>>>>> I am having a problem with a brand new install of Fedora 9. This
>>>>> machine has two nic's, eth0 and eth1. They are both . We currently
>>>>> have eth0 plugged into a router, had eth1 plugged in earlier to 
>>>>> try it
>>>>> as well but we have this problem on both nics.
>>>>>
>>>>> Basically, on install we specified that both nics were to be dhcp, 
>>>>> and
>>>>> to come up on boot. But neither of them get an ip on boot. I know 
>>>>> that
>>>>> it's not a problem with the cable, as we plugged it into a different
>>>>> machine and it works fine. I don't think it's a problem with the nics
>>>>> as I can't see both of them being toast on a new machine.
>>>>>
>>>>> ifconfig eth0 up does nothing. I've gotten someone local to the 
>>>>> server
>>>>> to try dhclient eth0 and then tail /var/log/messages. We see
>>>>> DHCPREQUEST, a bunch of DHCPDISCOVER lines and then end with a "No
>>>>> DHCPOFFERS received" message. ifconfig never shows either 
>>>>> interface as
>>>>> having an "inet ..." line, but they get an "inet6 ..." line. I know
>>>>> it's not a problem with the dhcp server because it's our isp's, and
>>>>> our other machines can grab an ip fine.
>>>>>
>>>>> I've shut off Networkmanager (service NetworkManager stop) and 
>>>>> started
>>>>> the network (service network start).
>>>>>
>>>>> service network start outputs:
>>>>> Bringing up loopback interface [OK]
>>>>> Bringing up interface eth0:
>>>>> Determining IP information for eth0... failed. [FAILED]
>>>>> Bringing up interface eth0:
>>>>> Determining IP information for eth1... failed. No link available.
>>>>> Check cable. [FAILED]
>>>>>
>>>>> Our /etc/sysconfig/network-scripts/ifcfg-eth0 looks like...
>>>>>
>>>>> DEVICE=eth0
>>>>> BOOTPROTO=dhcp
>>>>> ONBOOT=yes
>>>>>
>>>>> Any tips would be greatly appreciated. Thanks in advance!
>>>>>
>>>>> Laura
>>>> I have F9 running on a computer with just one nic. Everything worked
>>>> until about a week ago, when the nic suddenly no longer automatically
>>>> got a dhcp address. My work around is to run dhclient etho &. DHCP
>>>> connects then. I still haven't figured out why this happened or what
>>>> the correct fix is.
>>>
>>>  You're missing the HWADDR= stanzas in your configs. This tells the 
>>> kernel
>>> which NIC is actually eth0 and eth1 by identifying the MAC address.
>>
>> Thanks, but nothing seems to change when I add the HWADDR to both
>> eth's configs, so the problem is still existing.
>>
>> -- 
>> Laura
>>
>
> Just for fun, have you checked to see if you have any available IP 
> addresses on your router?
>
> We had this problem a while back and it turned out our leases were 
> permanent and once the pool was used up, no one could get a lease.
>
>
>
No, they plugged in another computer to the router and according to them 
it worked fine. My guess is the drivers for both net cards are not 
correct. Who is the manufacturer of the cards?




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