Re: [gentoo-user] modules.conf - alias for eth devices - can't set the correct interface number

["Daniel da Veiga" <danieldaveiga@gmail.com>]

On 10/26/06, Claudinei Matos <claudineimatos@gmail.com> wrote:
> Hi guys,
>
> I'm changing my third network card (a 3c905cx) with a 3c905B one. Well, the
> drivers are the same and the slot used is also the same.
> My machine has other two NICs, one onboard (via-rhine) and a old realtek
> 8029 10/10 (ne2k-pci).
> On my /etc/modules.d/aliases I have the 3 lines below:
>
> alias eth0 via-rhine
> alias eth1 ne2k-pci
> alias eth2 3c59x
>
> and it works very well setting each device to the right eth interface until
> I'd start to change the NICs, sometimes it does not work but shuting down
> and powering up the machine again used to solve.
> now, since I'd changed the NICs, every time I boot up my machine the third
> device (3com) is associated with eth3 and eth2 does not have any device
> associated.
> my dmesg says that the interface eth2 was associated with the ne2k-pci but
> ifconfig tells that eth1 is ne2k-pci and eth3 (which doesn't appear at dmesg
> log) is the 3com one.
>
> ti01 myers # ifconfig eth3 up
> ti01 myers # ifconfig|grep eth
> eth0      Link encap:Ethernet  HWaddr 00:50:8D:84:A8:4F
> eth1      Link encap:Ethernet  HWaddr 00:C0:DF:EA:D6:49
> eth3      Link encap:Ethernet  HWaddr 00:50:04:6E:9C:AB
>
> ti01 myers # dmesg|grep eth
> eth0: VIA Rhine II at 0xec061000, 00:50:8d:84:a8:4f, IRQ 193.
> eth0: MII PHY found at address 1, status 0x786d advertising 05e1 Link 45e1.
> eth2: RealTek RTL-8029 found at 0xa400, IRQ 209, 00:C0:DF:EA:D6:49.
> eth0: link up, 100Mbps, full-duplex, lpa 0x45E1
>
> ti01 myers # dmesg|grep 3Com
> 0000:00:0a.0: 3Com PCI 3c905B Cyclone 100baseTx at ffffc20000228000.
>
> Well, I do not have any idea about how to fix it or what may be wrong since
> it is supposed to just setup /etc/modules.d/aliases and run modules-update
> to generate /etc/modules.conf.
> One extra information is that booting in single mode (init=/bin/bash) the
> interface order is ok. Could it be a udev problem?
>
> Thanks for the help,
>

I'm pretty sure you can use UDEV rules to set it, something like this:

# cat /etc/udev/rules.d/10-local.rules
BUS=="pci", KERNEL=="eth[0-9]", SYSFS{address}=="00:2a:9a:d4:65:32", \
NAME="lan0"
BUS=="pci", KERNEL=="eth[0-9]", SYSFS{address}=="00:a0:5d:3e:ae:54", \
NAME="lan1"

Where SYSFS{address} is the MAC address of the card.
-- 
Daniel da Veiga
Computer Operator - RS - Brazil
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