T. Marvin wrote:
> The error I'm having (on the new one) is that when it boots up, the
> ethernet devices will show up as eth0 thru eth2 in the boot logs or
> whenever I force removal and reloading (i.e. rmmod, modprobe) of the
> 'natsemi' driver, but show up as eth3 thru eth5 when the driver is in
> the system.
>
> Quote from 'dmesg' (the boot log):
> natsemi eth0: NatSemi DP8381[56] at 0xa0000000 (0000:00:12.0),
> 00:00:24:c9:f2:50, IRQ 10, port TP.
> natsemi eth1: NatSemi DP8381[56] at 0xa0001000 (0000:00:13.0),
> 00:00:24:c9:f2:51, IRQ 11, port TP.
> natsemi eth2: NatSemi DP8381[56] at 0xa0002000 (0000:00:14.0),
> 00:00:24:c9:f2:52, IRQ 5, port TP.
>
I doubt this is a firmware problem. Most current systems use udev, and
it sometimes maps devices (eth included) in a seemingly "random" order.
In fact, I've seen 2 _identical_ installs on the _same_ box yield
different device ordering.
In order to make things more predictable, there is are config files that
store "persistent" device mappings after a device is first seen. I can
speak for slackware, but under debian the config directory is /etc/udev/
. Within this directory there are rule files for building the
persistent mappings, and the mapping files themselves in
/etc/udev/rules.d/ .
On one of my boxes the rules.d directory has "z25_persistent-net.rules"
containing:
# 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 0x8086:0x1229 (e100)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:30:48:23:3f:76",
NAME="eth0"
# PCI device 0x8086:0x1079 (e1000)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:04:23:c5:36:7d",
NAME="eth2"
# PCI device 0x8086:0x1079 (e1000)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:04:23:c5:36:7c",
NAME="eth3"
# PCI device 0x8086:0x100d (e1000)
SUBSYSTEM=="net", DRIVERS=="?*", ATTRS{address}=="00:30:48:23:3f:75",
NAME="eth1"
---------------------
And, yes, changing entries in here does change the eth to mac mappings.
-Chris
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