$ /sbin/ifconfig eth0 Link encap:Ethernet HWaddr 11:22:33:44:55:66 $ /sbin/ifconfig eth0|sed -n 's/^.*HWaddr \(.*\)$/\1/p' 11:22:33:44:55:66
# ifconfig eth0 down # ifconfig eth0 hw ether 11:22:33:44:55:66 # ifconfig eth0 up
# vi /etc/network/interfaces
auto eth0
iface eth0 inet static
hwaddress ether 11:22:33:44:55:66
