自动获取：
netsh interface ip set address name="以太网" source=dhcp
netsh interface ip set dns "以太网" source=dhcp
静态Ip：
Win7/Win10:
netsh interface ip set address name="以太网" source=static addr=127.0.0.1 mask=255.255.255.0 gateway=127.0.0.254
netsh interface ip set dns "以太网" source=static addr=8.8.8.8
WinXP:
netsh interface ip set address name="本地连接" source=static addr=127.0.0.1 mask=255.255.255.0
netsh interface ip set address name="本地连接" gateway=127.0.0.254 gwmetric=0
netsh interface ip set dns "本地连接" source=static addr=8.8.8.8