Can't keep a constant MAC address for eth0

[Joel Goguen]

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NoOp wrote:
> On 01/18/2008 03:13 PM, Joel Goguen wrote:
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>> I have a HP Pavilion dv2622 with Ubuntu Gutsy, and I can't seem to get
>> the MAC address for eth0 to stay constant. At this time, I have eth27 in
>> ifconfig output, with 28 entries in
>> /etc/udev/rules.d/70-persistent-net.rules all similar to the following:
> 
> I wonder if perhaps your problem is related to this:
> 
> https://bugs.launchpad.net/ubuntu/+source/linux/+bug/153727
> [Ethernet device's number increases by one after every reboot]
> 
> 
This has actually been fixed
(at least for me) since somewhere in the Hardy timeframe.
Unfortunately, it doesn't seem to be fixed for everyone.

@Jason: the issue was that the MAC was being read off in the opposite
order.  It looked like a broadcast MAC, but instead of following the RFC
and reversing it, forcedeth just generated a random valid MAC.  Most of
that, of course, I learned after it was fixed...

@harshavardhan, have you just installed 8.10, or do you have all the
updates?  Can you give the output of these commands:

uname -r

apt-cache policy linux-image-generic

ifconfig | grep eth0 | awk '{print $5;}'

- --
Joel Goguen
Ubuntu User #15951
When we help, we benefit
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