[eepro100] different MAC addresses

Jernej Porenta jernejp at flextronics.si
Sun Feb 20 10:50:56 PST 2005


Maybe this topic was already covered but I cannot find the answer in the 
archives nor on google...

I have server with integrated Intel E100 NIC:

When I load eepro100.o module from 2.4.29 linux kernel built by myself 
from vanilla sources I get (dmesg):
eepro100.c:v1.09j-t 9/29/99 Donald Becker 
eepro100.c: $Revision: 1.36 $ 2000/11/17 Modified by Andrey V. Savochkin 
<saw at saw.sw.com.sg> and others
PCI: Found IRQ 11 for device 02:08.0
eth0: Intel Corp. 82801BA/BAM/CA/CAM Ethernet Controller, 
00:03:47:F2:1C:A3, IRQ 11.
   Board assembly 000000-000, Physical connectors present: RJ45
   Primary interface chip i82555 PHY #1.
   General self-test: passed.
   Serial sub-system self-test: passed.
   Internal registers self-test: passed.
   ROM checksum self-test: passed (0x04f4518b).

Then I execute:
ifconfig eth0 netmask

and this is what I get:
eth0      Link encap:Ethernet  HWaddr 08:00:46:06:FF:CF
           inet addr:  Bcast:  Mask:
           RX packets:1196 errors:0 dropped:0 overruns:0 frame:0
           TX packets:1144 errors:0 dropped:0 overruns:0 carrier:0
           collisions:0 txqueuelen:1000
           RX bytes:157230 (153.5 Kb)  TX bytes:185526 (181.1 Kb)
           Interrupt:11 Base address:0xa000

Could you please explain to me how can HWaddr (08:00:46:06:FF:CF) differ 
from the MAC address in the dmesg (00:03:47:F2:1C:A3)? The problem is 
because the machine is operating on the network with "dmesg" MAC address 
(00:03:47:F2:1C:A3) not with the HWaddr (08:00:46:06:FF:CF).

When the dhcp client request the IP it sends MAC address from HWaddr 
(08:00:46:06:FF:CF) and the result is that the DHCP server responds to 
new MAC which is non-routable, because nobody doesn't know anything 
about that MAC (08:00:46:06:FF:CF).

I tried changing the MAC address of eth0 with "ifconfig eth0 hw ether 
00:03:47:F2:1C:A3" but the result was the same...

I even tried e100.o driver, but no success...

Does anyone have a simple solution for my problem...

thanks in advance,



Jernej Porenta

Flextronics d.o.o.
Vodovodna 99
1000 Ljubljana, Slovenia
Tel: +386 1 53 09 500
Fax: +386 1 53 09 514

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