> > Is it possible to change the mac address of an ethernet card using
> > ifconfig?
>
> Not in any 'standard' card, no. Some cards (in SUN workstations) allow
> you to swap the EEPROM with the mac address, and I'll bet somewhere
> someone has designed a card with a programmable mac address, but
> normally it's not settable.
while ifconfig might miss this functionality, i believe your answer
is incorrect. Several FreeBSD drivers read the MAC address from
the rom/eeprom, copy it to sc->arpcom.ac_enaddr, and write it back
to the card's address filter in the init phase. I suppose on other
systems the same thing happens. It's a software thing, not a hardware
one.
A quick check shows the following drivers do that:
sys/i386/isa/if_ed.c
sys/pci/if_fxp.c
sys/pci/if_de.c (probably)
just to name the most common ones.
cheers
luigi
-----------------------------------+-------------------------------------
Luigi RIZZO, [email protected] . Dip. di Ing. dell'Informazione
http://www.iet.unipi.it/~luigi/ . Universita` di Pisa
TEL/FAX: +39-050-568.533/522 . via Diotisalvi 2, 56126 PISA (Italy)
http://www.iet.unipi.it/~luigi/ngc99/
==== First International Workshop on Networked Group Communication ====
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