设置文件在etc 目录下的 interfaces 文件，内容如下
# This file describes the network interfaces available on your system
# and how to activate them. For more information, see interfaces(5).
# The loopback network interface
auto lo
iface lo inet loopback
# The primary network interface
allow-hotplug eth0
iface eth0 inet static
address 192.168.146.6
netmask 255.255.255.0
gateway 192.168.146.2
# address 192.168.10.51
# netmask 255.255.255.0
# network 192.168.10.0
# broadcast 192.168.10.255
# gateway 192.168.10.9
# # dns-* options are implemented by the resolvconf package, if installed
# dns-nameservers 192.168.10.9
auto eth0
allow-hotplug usb0
iface usb0 inet static
address 192.168.46.32
netmask 255.255.255.0
broadcast 192.168.46.255
auto usb0
