ls
ifconfig eth0 down ifconfig eth0 변경할 IP up ifconfig eth0:0 gateway up < gateway 설정 > route add default gw 192.168.10.1 eth0 < route defalut add>

ifconfig eth0 down
ifconfig eth0 192.168.10.30 up
ifconfig eth0:0 192.168.10.11 up
route add default gw 192.168.10.1 eth0