What software are you running that changes the apparent MAC address? The one that's permanently assigned to the interface is, well, permanent.

Unless you're assigning something else at the network stack level (in which case there should be the new MAC address in that software's configuration somewhere), then you only need to get the MAC address for a given network interface on the local machine once.

I'd suggest something like c:\mymac.dat or c:\windows\system32\mymac.dat as a place to store the MAC address for when you're offline. That is, unless you're trusting a Perl program to do something sneaky like lock a user out if they install the software on another machine or change Ethernet cards. ;-)

In reply to Re: WIN32: How to power-up a device? by mr_mischief
in thread WIN32: How to power-up a device? by cmv

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