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Bug#413622: Ethernet device is renumbered on each reboot

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Jean-Michel PHILIPPE

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Mar 6, 2007, 2:30:11 AM3/6/07

Package: udev
Version: 0.105-2

I have a built-in motherboard network card and since udev 0.105-2 it gets renamed
after each boot (eth0, eth1, etc.). Unfortunately the kernel isn't able to find a
proper MAC address at start-up so that it switches to a random one:

$ dmesg
[...]
0000:00:05.0: Invalid Mac address detected: ff:ff:ff:ff:ff:ff
Please complain to your hardware vendor. Switching to a random MAC.
eth0: forcedeth.c: subsystem: 01462:0300 bound to 0000:00:05.0
[...]

I understood that udev rules try to find a previous ethernet card number in
'/etc/udev/rules.d/z25_persistent-net.rules' at each boot based on MAC address.
I think it should also be based on the card physical position since the card may
have been replaced or, in my case, may have a different MAC address. This seems
to me possible since the udev script also reports the physical position:

$ less /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.

# PCI device 0x10de:0x00df (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:dc:d2:d4", NAME="eth0"

Regards,

JM. Philippe

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Kurt Albershardt

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Mar 8, 2007, 11:30:08 PM3/8/07

I'm thinking this might be a bug in forcedeth or the nVidia chipset drivers. I've seen the invalid MAC warnings for awhile, but since my MAC is not so blatantly wrong I didn't pay too much attention. My latest dmesg says:

0000:00:07.0: Invalid Mac address detected: 75:47:40:f3:18:00

Please complain to your hardware vendor. Switching to a random MAC.

/etc/udev/rules.d/z25_persistent-net.rules tells the story (the e1000 entries are me trying a PCI card in two different slots to help diagnose the issue.)

413622-s...@bugs.debian.org

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:7a:25:3d", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:f6:23:06", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:23:60:a5", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:e2:f9:eb", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:ea:12:b3", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:c9:53:8d", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:bd:16:6e", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:49:e4:4a", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:e5:ad:bb", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:c8:0e:99", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:f8:8a:19", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:9d:42:6b", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:5a:18:b4", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:a4:36:78", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:17:cb:0a", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:30:3f:86", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:62:b6:0d", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:37:b7:ae", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:0b:97:14", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:79:81:39", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:d9:7c:37", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:8f:ff:71", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:82:72:b8", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:0b:3f:8b", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:69:dc:06", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:97:3f:79", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:61:1e:02", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:d7:cf:ca", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:94:14:80", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:c3:51:a3", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:59:66:03", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:4e:f6:e8", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:5a:55:b7", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:6f:ff:8d", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:f2:8c:39", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:82:72:ff", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:3a:4a:ad", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:f7:ca:ed", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:d3:dc:1a", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:ab:e3:78", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:3a:e4:c1", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:38:4e:8d", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:d1:0b:86", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:ee:67:bb", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:0d:5a:f4", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:27:cb:08", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:69:fe:66", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:a8:54:02", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:7b:50:44", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:a5:30:3a", NAME="eth0"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:84:fb:b4", NAME="eth1"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:b5:19:3d", NAME="eth2"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:c5:79:39", NAME="eth3"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:cd:c2:c5", NAME="eth4"

# PCI device 0x8086:0x1076 (e1000)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:0e:0c:59:b5:4a", NAME="eth5"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:08:85:32", NAME="eth6"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:af:1c:fb", NAME="eth7"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:3b:af:17", NAME="eth8"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:e0:6b:bc", NAME="eth9"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:84:a4:e1", NAME="eth10"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:27:d9:01", NAME="eth11"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:05:59:e1", NAME="eth12"

# PCI device 0x10de:0x03ef (forcedeth)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:00:6c:3f:bf:fd", NAME="eth13"

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