/etc/network/interfaces というファイルに
auto eth0iface iface eth0 inet static address 192.168.1.128 netmask 255.255.255.0 network 192.168.25.0 broadcast 192.168.1.255 gateway 192.168.25.1 # dhcp # iface eth0 inet dhcp
/etc/udev/rules.d/70-persistent-net.rulesを削除
$ sudo /etc/init.d/networking restart