How often does the Mac address change?

How often does it change, or does it remain the same until you force it to change?



Whats the risk not changing mac address?How often does the Mac address change?
MAC addresses cannot be changed. They're a type of serial number unique to the device.







..How often does the Mac address change?
I do not believe it's possible to change a Mac address. They are permanent. But an IP address can change.
A MAC address uniquely identifies a piece of network hardware. They are embedded into the device during the manufacturing process and never change by themselves. It is possible to make a device ';masquerade'; under a different MAC address. There are ways to permanently alter a device's MAC address, but they are not recommended.



There is no risk to not changing a MAC address; they are not designed to change.



--- Samuel
It cannot be changed!
The MAC address is burnt into your network interface. You can't change it with the following exceptions:



You pull out a network card from your desktop, and replace it with another network card.

You are running a virtual computer, such as something inside VMware, Xen, Parallels, or VirtualBox.

Some Internet routers allow you to spoof the MAC address. In other words, you don't really change the MAC address, but the router will tell your Internet provider a different MAC address than the one it really has.



Also keep in mind that your wired and wireless networking options have different MAC addresses.
The MAC address always remains the same. However, it is possible to 'spoof' a MAC address. There is no risk in not changing your MAC address, as it cannot be done. The MAC Address is usually used synonymously with ';Physical Address.'; As it is the physical address of the computer. For more detailed information check the Wikipedia article that I have cited.
yes they can be - but do anything wrong and well dont ask to have it fixed



a computer stays the same mac address all the time

its your ip address that can be changed as many times as you like..



as seen by this pic

http://i.d.com.com/i/dl/media/dlimage/90