Re: Find MAC address stored in NIC firmware

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> dmidecode will show you the real hardware MAC address.
> If you're using bonding you can also see it in /proc/net/bonding/bondX,
> this lists both the permanent address and the active one.

urgrue,

You're right about /proc/net/bonding/bondX. I just checked. It has 
"Permanent HW addr", which is NOT changed by `ifconfig .. hw ether ...'. 
This at least serves as a workaround for those interfaces I have bonding 
on. Thank you!

I can't get dmidecode to show the real MAC address. BTW, I got in touch 
with an author of ethtool. He provided a patch to expose perm_addr as a 
command line option for ethtool. I haven't run patch for too many years 
so for now I'm just waiting for the patched source to be available.

Yong Huang


      

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