Why do i have 2 mac addresses?

March 8, 2011 at 20:11:18
Specs: Linux i686
My previous question was a little confusing, allow me to clarify.

in my wireless table of who is connected to the wireless network there are 3 different mac addresses displaying when there is only two computers in the house(its not an outsider, it only shows when the other pc turns on), 2 of them have the same computer name but are connected at different IP addresses(,
Side Note:[The 2 PCs in the house were bought at the same time and the mac addresses are similar, but the third is different]

Now that i have installed ubuntu i can really see what's going on with my ports, i notice that the mac address, that is not similar to my pc and the 'other pc', is poking around at my ports whenever the 'other pc' is turned on.

What do you think?

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March 8, 2011 at 20:53:53
Where are you reading these MAC addresses from?

Every single netwrok device has its own MAC address. Therefore, if you have two computers sharing an Internet connection there must be at least one other device with its own MAC address. This could be a router. Modem or a switch,

Detail your netwrok configuration and we might be able to work out which it is,


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March 8, 2011 at 21:36:08
It sounds like the wired & wireless NICs are both enabled at the same time. Disable one of them.

How do you know when a politician is lying? His mouth is moving.

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