renamed eth0 to eth1, why?

[Neal Becker]

Mar  9 06:19:55 nbecker1 kernel: eth0: RTL8168b/8111b at 0xffffc2000034c000, 
00:23:8b:53:f0:80, XID 38000000 IRQ 17
Mar  9 06:19:55 nbecker1 kernel: udev: renamed network interface eth0 to 
eth1

Uh, why?  This notebook only has one wired interface.

2.6.27.19-170.2.35.fc10.x86_64

[Josep Puigdemont]

Hi,

I experienced a similar situation a while ago. In my case the problem
was that the driver changed the MAC address of the device (it was a
bug in r8169 driver), udev simply detected a "new" network card and,
to distinguish it from the old one, it automatically performed the
device name change.

I don't know if this is the case for you, but if so, to get back the
old MAC address I had to power-cycle the card (it required removing
the network cable from the card too).

/Josep


On Mon, Mar 9, 2009 at 11:49 AM, Neal Becker <ndbecker2(a)gmail.com&gt; wrote:
>  Mar  9 06:19:55 nbecker1 kernel: eth0: RTL8168b/8111b at
> 0xffffc2000034c000,
>  00:23:8b:53:f0:80, XID 38000000 IRQ 17
>  Mar  9 06:19:55 nbecker1 kernel: udev: renamed network interface eth0 to
>  eth1
>
>  Uh, why?  This notebook only has one wired interface.
>
>  2.6.27.19-170.2.35.fc10.x86_64
>
>
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>  fedora-test-list mailing list
>  fedora-test-list(a)redhat.com
>  To unsubscribe:
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>

[Neal Becker]

Ah, this notebook just came back from having it's MB replaced.  I guess that 
explains it.

Josep Puigdemont wrote:

>  Hi,
>  
>  I experienced a similar situation a while ago. In my case the problem
>  was that the driver changed the MAC address of the device (it was a
>  bug in r8169 driver), udev simply detected a "new" network card and,
>  to distinguish it from the old one, it automatically performed the
>  device name change.
>  
>  I don't know if this is the case for you, but if so, to get back the
>  old MAC address I had to power-cycle the card (it required removing
>  the network cable from the card too).
>  
>  /Josep
>  
>  
>  On Mon, Mar 9, 2009 at 11:49 AM, Neal Becker <ndbecker2(a)gmail.com&gt; wrote:
> > Mar  9 06:19:55 nbecker1 kernel: eth0: RTL8168b/8111b at
> > 0xffffc2000034c000, 00:23:8b:53:f0:80, XID 38000000 IRQ 17
> > Mar  9 06:19:55 nbecker1 kernel: udev: renamed network interface eth0 to
> > eth1
> >
> > Uh, why?  This notebook only has one wired interface.
> >
> > 2.6.27.19-170.2.35.fc10.x86_64
> >
> >
> > --
> > fedora-test-list mailing list
> > fedora-test-list(a)redhat.com
> > To unsubscribe:
> > https://www.redhat.com/mailman/listinfo/fedora-test-list
> >
>

[Michal Jaegermann]

On Mon, Mar 09, 2009 at 07:00:21AM -0400, Neal Becker wrote:
>  Ah, this notebook just came back from having it's MB replaced.  I
> guess that 
>  explains it. 
In that case have a look at
/etc/udev/rules.d/70-persistent-net.rules
You will likely find there a line with your old MAC and with
NAME="eth0" and another one for a new MAC and with NAME="eth1".

You can edit this file but be careful as most likely there is
HWADDR in your ifcfg-eth0 and newly created ifcfg-eth1.

   Michal

[Rodd Clarkson]

On Mon, 2009-03-09 at 10:03 -0600, Michal Jaegermann wrote:
>  On Mon, Mar 09, 2009 at 07:00:21AM -0400, Neal Becker wrote:
>  > Ah, this notebook just came back from having it's MB replaced.  I guess that 
>  > explains it.
>  
>  In that case have a look at
>  /etc/udev/rules.d/70-persistent-net.rules
>  You will likely find there a line with your old MAC and with
>  NAME="eth0" and another one for a new MAC and with NAME="eth1".
>  
>  You can edit this file but be careful as most likely there is
>  HWADDR in your ifcfg-eth0 and newly created ifcfg-eth1. 
I've had a similar situation where I did the install of f10 (and
rawhide) with two network cards and then pulled out one of them and now
I'm seeing all sorts of weird eth1/eth0 things (which is likely what
you're talking about above)

I'm also getting issues with s-c-n tying the mac address to the config
and then having the mac address change (how, I don't know).

The r8139 thing rings bells.


R.
-- 
"It's a fine line between denial and faith.
 It's much better on my side"