change mac address in kubuntu

wason21cn · 09-11-2006, 04:05 PM

I would like to change the mac address of eth0 with the origininal mac address 00:00:00:00:00:00 by

ifconfig eth0 down
ifconfig eth0 hw ether 00:00:00:00:00:01
ifconfig eth0 up

after that, run ifconfig -a and display the mac address had changed, but when access internet, alway s with feedback unkown host. Any one know this problems? When ifconfig eth0 down, it is possible change the DNS or something else?

binary_y2k2 · 09-11-2006, 05:29 PM

I'm not sure why you want to change the MAC address of the interface, or what for. But I think you are saying that you can't connect to any website and you get the error "unknown host".

DNS servers are stored in /etc/resolv.conf in the format "nameserver [IP Address]", eg

Code:

nameserver 123.123.123.123
nameserver 213.213.213.213
nameserver 231.231.231.231

you can change them anytime, whether the interface is down or not.

raska · 09-11-2006, 06:52 PM

You can't change the MAC address of a device as it is permanent by design, but you can "spoof" the MAC address reported by the operative system, according to this article at Wikipedia

wason21cn · 09-12-2006, 12:23 AM

clear, thanks guys.