Re: ethtool documentation

From: Randy.Dunlap (
Date: Tue Aug 06 2002 - 14:44:16 EST

On Tue, 6 Aug 2002, Chris Friesen wrote:

| "Richard B. Johnson" wrote:
| > Because of this, there is no such thing as 'unused eeprom space' in
| > the Ethernet Controllers. Be careful about putting this weapon in
| > the hands of the 'public'. All you need is for one Linux Machine
| > on a LAN to end up with the same IEEE Station Address as another
| > on that LAN and connectivity to everything on that segment will
| > stop. You do this once at an important site and Linux will get a
| > very black eye.
| Can't we already tell cards (some of them anyway) what MAC address to use when
| sending packets? This doesn't overwrite the EEPROM, but it does last for that
| session...

Sure, and that doesn't violate any IEEE Ethernet standards.
Locally Administered Addresses are allowed.
Just make sure that they don't conflict with other addresses.


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