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-   -   Why don't I get an IP via dhcp ? (https://www.linuxquestions.org/questions/linux-newbie-8/why-dont-i-get-an-ip-via-dhcp-718847/)

jonaskellens 04-13-2009 03:28 PM
Why don't I get an IP via dhcp ?
 
Code:
[root@jonas jonas]# cat /etc/sysconfig/network-scripts/ifcfg-eth0
# Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express
DEVICE=eth0
BOOTPROTO=dhcp
HWADDR=00:1b:24:a4:b6:06
TYPE=Ethernet

Code:
[root@jonas jonas]# service network restart
Shutting down interface eth0:                              [  OK  ]
Shutting down loopback interface:                          [  OK  ]
Bringing up loopback interface:                            [  OK  ]
Bringing up interface eth0: 
Determining IP information for eth0... failed.
                                                          [FAILED]
The IP-range for clients in my router is set from 100 to 199...

Code:
[root@jonas jonas]# ifconfig
eth0      Link encap:Ethernet  HWaddr 00:1B:24:A4:B6:06 
          inet6 addr: fe80::21b:24ff:fea4:b606/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 b)  TX bytes:1184 (1.1 KiB)
          Interrupt:17

lo        Link encap:Local Loopback 
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:16436  Metric:1
          RX packets:248 errors:0 dropped:0 overruns:0 frame:0
          TX packets:248 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0
          RX bytes:16801 (16.4 KiB)  TX bytes:16801 (16.4 KiB)

I don't get it...

farslayer 04-13-2009 03:58 PM
More info ..

cat /var/log/dmesg | grep -i eth

cat /var/log/dmesg | grep -i tg3

lsmod | grep tg3

modinfo tg3

uname -a


https://bugzilla.redhat.com/show_bug.cgi?id=436563

jay73 04-13-2009 04:07 PM
Quote:
eth0 Link encap:Ethernet HWaddr 00:1B:24:A4:B6:06
inet6 addr: fe80::21b:24ff:fea4:b606/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:0 errors:0 dropped:0 overruns:0 frame:0
TX packets:8 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:0 (0.0 b) TX bytes:1184 (1.1 KiB)
Interrupt:17
This seems to suggest that you will need to install a driver to get your NIC working. And are you sure that your router is configured to use NAT?

jonaskellens 04-15-2009 02:29 PM
Quote:
Originally Posted by farslayer (Post 3507722)
More info ..

cat /var/log/dmesg | grep -i eth

cat /var/log/dmesg | grep -i tg3

lsmod | grep tg3

modinfo tg3

uname -a
Code:
[jonas@jonas ~]$ cat /var/log/dmesg | grep -i eth
ACPI Error (psparse-0530): Method parse/execution failed [\_SB_.PCI0._OSC] (Node f7815270), AE_NOT_FOUND
Driver 'sd' needs updating - please use bus_type methods
Driver 'sr' needs updating - please use bus_type methods
eth0: Tigon3 [partno(BCM95787m) rev b002 PHY(5787)] (PCI Express) 10/100/1000Base-T Ethernet 00:1b:24:a4:b6:06
eth0: RXcsums[1] LinkChgREG[0] MIirq[0] ASF[0] WireSpeed[1] TSOcap[1]
eth0: dma_rwctrl[76180000] dma_mask[64-bit]
Code:
[jonas@jonas ~]$ cat /var/log/dmesg | grep -i tg3
tg3.c:v3.94 (August 14, 2008)
tg3 0000:08:00.0: enabling device (0000 -> 0002)
tg3 0000:08:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
tg3 0000:08:00.0: setting latency timer to 64
Code:
[jonas@jonas ~]$ lsmod | grep tg3
tg3                  107268  0
libphy                18560  1 tg3
Code:
[jonas@jonas ~]$ modinfo tg3
filename:      /lib/modules/2.6.27.21-170.2.56.fc10.i686/kernel/drivers/net/tg3.ko
version:        3.94
license:        GPL
description:    Broadcom Tigon3 ethernet driver
author:        David S. Miller (davem@redhat.com) and Jeff Garzik (jgarzik@pobox.com)
srcversion:    52BD623BB0736240906AC59
alias:          pci:v0000106Bd00001645sv*sd*bc*sc*i*
alias:          pci:v0000173Bd000003EAsv*sd*bc*sc*i*
alias:          pci:v0000173Bd000003EBsv*sd*bc*sc*i*
alias:          pci:v0000173Bd000003E9sv*sd*bc*sc*i*
alias:          pci:v0000173Bd000003E8sv*sd*bc*sc*i*
alias:          pci:v00001148d00004500sv*sd*bc*sc*i*
alias:          pci:v00001148d00004400sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001699sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001680sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001681sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000165Bsv*sd*bc*sc*i*
alias:          pci:v000014E4d00001684sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001698sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001713sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001712sv*sd*bc*sc*i*
alias:          pci:v000014E4d000016DDsv*sd*bc*sc*i*
alias:          pci:v000014E4d0000166Bsv*sd*bc*sc*i*
alias:          pci:v000014E4d0000166Asv*sd*bc*sc*i*
alias:          pci:v000014E4d00001679sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001678sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001669sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001668sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000167Fsv*sd*bc*sc*i*
alias:          pci:v000014E4d00001693sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000169Bsv*sd*bc*sc*i*
alias:          pci:v000014E4d0000169Asv*sd*bc*sc*i*
alias:          pci:v000014E4d00001674sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001673sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000167Bsv*sd*bc*sc*i*
alias:          pci:v000014E4d00001672sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000167Asv*sd*bc*sc*i*
alias:          pci:v000014E4d000016FEsv*sd*bc*sc*i*
alias:          pci:v000014E4d000016FDsv*sd*bc*sc*i*
alias:          pci:v000014E4d000016F7sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001601sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001600sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000167Esv*sd*bc*sc*i*
alias:          pci:v000014E4d0000167Dsv*sd*bc*sc*i*
alias:          pci:v000014E4d0000167Csv*sd*bc*sc*i*
alias:          pci:v000014E4d00001677sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001676sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000165Asv*sd*bc*sc*i*
alias:          pci:v000014E4d00001659sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001658sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000166Esv*sd*bc*sc*i*
alias:          pci:v000014E4d00001649sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000170Esv*sd*bc*sc*i*
alias:          pci:v000014E4d0000170Dsv*sd*bc*sc*i*
alias:          pci:v000014E4d0000169Dsv*sd*bc*sc*i*
alias:          pci:v000014E4d0000169Csv*sd*bc*sc*i*
alias:          pci:v000014E4d00001696sv*sd*bc*sc*i*
alias:          pci:v000014E4d000016C7sv*sd*bc*sc*i*
alias:          pci:v000014E4d000016C6sv*sd*bc*sc*i*
alias:          pci:v000014E4d000016A8sv*sd*bc*sc*i*
alias:          pci:v000014E4d000016A7sv*sd*bc*sc*i*
alias:          pci:v000014E4d000016A6sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000165Esv*sd*bc*sc*i*
alias:          pci:v000014E4d0000165Dsv*sd*bc*sc*i*
alias:          pci:v000014E4d00001654sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001653sv*sd*bc*sc*i*
alias:          pci:v000014E4d0000164Dsv*sd*bc*sc*i*
alias:          pci:v000014E4d00001648sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001647sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001646sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001645sv*sd*bc*sc*i*
alias:          pci:v000014E4d00001644sv*sd*bc*sc*i*
depends:        libphy
vermagic:      2.6.27.21-170.2.56.fc10.i686 SMP mod_unload 686 4KSTACKS
parm:          tg3_debug:Tigon3 bitmapped debugging message enable value (int)
Code:
[jonas@jonas ~]$ uname -a
Linux jonas.jocan 2.6.27.21-170.2.56.fc10.i686 #1 SMP Mon Mar 23 23:37:54 EDT 2009 i686 i686 i386 GNU/Linux

farslayer 04-15-2009 07:48 PM
Driver is loading and I don't see any obvious errors jumping out at me.. have you tried to get a DHCP Lease after the system is up ?

open a terminal as root or use sudo however your system is configured and use dhclient to try and grab an address. Please post the output so we can see what happens. Heres a successful renewal on my box. .

Code:
debianlenny:~# dhclient

Internet Systems Consortium DHCP Client V3.1.1
Copyright 2004-2008 Internet Systems Consortium.
All rights reserved.
For info, please visit http://www.isc.org/sw/dhcp/

Listening on LPF/eth1/00:0c:f1:f5:1a:e2
Sending on  LPF/eth1/00:0c:f1:f5:1a:e2
Sending on  Socket/fallback
DHCPDISCOVER on eth1 to 255.255.255.255 port 67 interval 4
DHCPOFFER from 192.168.2.1
DHCPREQUEST on eth1 to 255.255.255.255 port 67
DHCPACK from 192.168.2.1
bound to 192.168.2.103 -- renewal in 41487 seconds.


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