While scanning with Netstumbler, some networks vendors show up as “Fake” or “User-defined”. What is this?
The “Fake” vendor is usually the all 0 MAC address. Most likely, your wireless card had a hiccup. Just unplug your wireless card, and plug it back in. That should fix the problem. “User-defined” vendor means the MAC address on that AP isn’t in the Netstumbler database because it doesn’t match a known vendor.
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