Hi, I have a Realteck 8139 PCI fst ethernet adapter. It uses the fealnx kernel module. I have problems changing the mac address. normally after boot it works correctly. but after i change the mac address it doesnt respond. $ping xxx.xxx.xxx.xxx <ping reply> $ifconfig eth0 down $ifconfig eth0 hw ether xx:xx:xx:xx:xx:xx $ifconfig eth0 up $ping xxx.xxx.xxx.xxx <network host unreachable> This is very wierd. I had a dlink lan card and it used to work properly after changing the mac address. Anyone knows why Realtek cards dont work after changing mac address... I have test this on a gentoo (2.6.7 kernel), slackware (2.4.26 kernel), knoppix live cd, pclinuxos live cd. Cya. __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com -- Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ FAQ: http://kernelnewbies.org/faq/