MAC 00:4C:69:6E:75:79

This is just a post to inform people about a specific problem with the
tulip driver when it can't find an EEPROM on the network card. It
automatically assigns 00:4C:69:6E:75:79 (Linux in hex) as the mac
address and that causes problems if, for instance, you have multiple
network cards on the same switch that have the same MAC. To fix that
problem edit, in Redhat: /etc/sysconfig/network-scripts/ifcfg-eth0 and
add MACADDR=xx:xx:xx:xx:xx:xx (to replace with the mac of your choice).

Ex of error in /var/log/messages

Mar 27 08:40:49 cartman kernel: tulip0: Missing EEPROM, this interface
may not work correctly!
Mar 27 08:40:49 cartman kernel: tulip0: MII transceiver #1 config 3100
status 786d advertising 01e1.
Mar 27 08:40:49 cartman kernel: eth0: ULi M5261/M5263 rev 80 at
dc82cc00, EEPROM not present, 00:4C:69:6E:75:79, IRQ 11.

On 26 Mar 2006, in the Usenet newsgroup comp.os.linux.networking, in article
<(E-Mail Removed) .com>, (E-Mail Removed)
wrote:

>This is just a post to inform people about a specific problem with the
>tulip driver when it can't find an EEPROM on the network card. It
>automatically assigns 00:4C:69:6E:75:79 (Linux in hex) as the mac
>address and that causes problems if, for instance, you have multiple
>network cards on the same switch that have the same MAC.

Well, that certainly makes sense, but can you give us a clue what
driver and kernel this is?

>Mar 27 08:40:49 cartman kernel

You mentioned Red Hat, and just by coincidence, they did have a release
called 'cartman' but that was _years_ ago (RH6.1 from October 1999 with
a 2.2.12 kernel.

Old guy