添加同网段多IP/不同网段多IP
以网卡名rename3为例子

修改/etc/network/interface
auto rename3
iface rename inet static
address 192.168.40.215
netmask 255.255.255.0
gateway 192.168.40.1

auto rename3:1
iface rename3:1 inet static
address 192.168.1.101
netmask 255.255.255.0
gatewat 192.168.1.1
重启网络服务
/etc/init.d/networking restart
ifconfig查看配置
rename3: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.40.215 netmask 255.255.255.0 broadcast 192.168.40.255
inet6 fe80::2731:2a3b:c348:a82 prefixlen 64 scopeid 0x20
ether 00:25:90:be:42:cd txqueuelen 1000 (Ethernet)
RX packets 13625619 bytes 17450271070 (17.4 GB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 8034861 bytes 5394942279 (5.3 GB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
device memory 0xaa900000-aa97ffff

rename3:1: flags=4163<UP,BROADCAST,RUNNING,MULTICAST> mtu 1500
inet 192.168.1.101 netmask 255.255.255.0 broadcast 192.168.1.255
ether 00:25:90:be:42:cd txqueuelen 1000 (Ethernet)
device memory 0xaa900000-aa97ffff
此时单网卡多网段多IP已经配置成功。

使用ping测试多个网段的设备能够ping通。

作者：chenjeni
链接：https://www.jianshu.com/p/e2e08f72eb04
来源：简书
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