Re: Gigabyte M61P-S3 and wild MAC address of ethernet interface

[Tero Mäntyvaara <termant@gmail.com>]

Hi,

Many thanks for your answer! :-) Here is the information you requested:

# lspci -nn | grep -i net
00:07.0 Bridge [0680]: nVidia Corporation MCP61 Ethernet [10de:03ef]
(rev a2)

# dmesg | egrep -i 'mac|eth'
ACPI: PCI Interrupt Link [LMAC] (IRQs 5 7 9 10 *11 14 15)
forcedeth.c: Reverse Engineered nForce ethernet driver. Version 0.56.
forcedeth: using HIGHDMA
0000:00:07.0: Invalid Mac address detected: 3f:3d:75:4d:1a:00
Please complain to your hardware vendor. Switching to a random MAC.
eth0: forcedeth.c: subsystem: 01458:e000 bound to 0000:00:07.0
eth1394: eth0: IEEE-1394 IPv4 over 1394 Ethernet (fw-host0)
eth6: no IPv6 routers present

# /sbin/ifconfig
eth6      Link encap:Ethernet  HWaddr 00:00:6C:B1:C1:64
         inet addr:10.11.12.12  Bcast:10.11.12.255  Mask:255.255.255.0
         inet6 addr: fe80::200:6cff:feb1:c164/64 Scope:Link
         UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
         RX packets:5656 errors:0 dropped:0 overruns:0 frame:0
         TX packets:3957 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:1000
         RX bytes:2779018 (2.6 MiB)  TX bytes:450604 (440.0 KiB)
         Interrupt:201 Base address:0xe000

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:257 errors:0 dropped:0 overruns:0 frame:0
         TX packets:257 errors:0 dropped:0 overruns:0 carrier:0
         collisions:0 txqueuelen:0
         RX bytes:20036 (19.5 KiB)  TX bytes:20036 (19.5 KiB)

# cat /etc/udev/rules.d/z25_persistent-net.rules
# This file was automatically generated by the /lib/udev/write_net_rules
# program, probably run by the persistent-net-generator.rules rules file.
#
# You can modify it, as long as you keep each rule on a single line.
# MAC addresses must be written in lowercase.

# Firewire device 001a4d0000e18fd8 (ohci1394)
SUBSYSTEM=="net", DRIVERS=="?*",
ATTRS{address}=="00:1a:4d:00:00:e1:8f:d8", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:44:27:b6",
NAME="eth1"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:af:3b:bd",
NAME="eth2"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:81:6e:05",
NAME="eth3"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:51:2c:f2",
NAME="eth4"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:1e:81:f6",
NAME="eth5"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:b1:c1:64",
NAME="eth6"

# cat /etc/network/interfaces
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).

# The loopback network interface
auto lo
iface lo inet loopback

# The primary network interface
allow-hotplug eth1
iface eth1 inet dhcp

Additional information:
The problem is that OS thinks that the MAC address is invalid some how.
I verfied that OS informs at every boot that MAC address is invalid. I
was wondering if this is result of incorrectly programmed Ethernet
physical controller MAC address? My PHY-controller is Realtek RTL8211.


Tero Mäntyvaara

Florian Kulzer wrote:
> On Sat, Feb 09, 2008 at 11:58:38 +0200, Tero Mäntyvaara wrote:
>   
> > Hi,
> >
> > I have got Debian 4.0r2 and Gigabyte M61P-S3 motherboard and I noticed  
> > it has "dynamic" MAC address :-/
> >
> > I tried to fix the problem with the help of document  
> > http://www.debian-administration.org/articles/501 but with no success.  
> > The problem is that every time I boot my system Debian finds the new  
> > ethernet interface and so I do not have internet connection.
> >
> > Has someone else had similar problem and so also sollution?
> >     
>
> I am not familiar with this problem, so I cannot promise anything, but I
> think it will help if you post some more information about your system.
> Let's start with the output of the following commands:
>
> lspci -nn | grep -i net
>
> dmesg | egrep -i 'mac|eth'
>
> /sbin/ifconfig
>
> cat /etc/udev/rules.d/z25_persistent-net.rules
>
> cat /etc/network/interfaces
>
>