诚实的小猴子

ubuntu16设置环回网络

发表于

系统默认带有一个127.0.0.1的换回网络，想添加更多有如下两种方法。

1. 第一种直接通过ifconfig命令添加

添加以前先使用ifconfig -a查看目前都有哪些网络，可以看到分别有eth0,eth1,lo。

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eth0      Link encap:Ethernet  HWaddr 08:00:27:ac:ea:bc  
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feac:eabc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1037 errors:0 dropped:0 overruns:0 frame:0
          TX packets:690 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:93176 (93.1 KB)  TX bytes:78768 (78.7 KB)

eth1      Link encap:Ethernet  HWaddr 08:00:27:49:50:84  
          inet addr:192.168.10.12  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe49:5084/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:1596 (1.5 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:22 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2373 (2.3 KB)  TX bytes:2373 (2.3 KB)

然后执行如下命令添加lo:0。

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ifconfig lo:0 192.168.10.1 netmask 255.255.255.255 up

再使用ifconfig -a查看就回发现多了一个lo:0了, 说明配置成功了。

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eth0      Link encap:Ethernet  HWaddr 08:00:27:ac:ea:bc  
          inet addr:10.0.2.15  Bcast:10.0.2.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:feac:eabc/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:1037 errors:0 dropped:0 overruns:0 frame:0
          TX packets:690 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:93176 (93.1 KB)  TX bytes:78768 (78.7 KB)

eth1      Link encap:Ethernet  HWaddr 08:00:27:49:50:84  
          inet addr:192.168.10.12  Bcast:192.168.10.255  Mask:255.255.255.0
          inet6 addr: fe80::a00:27ff:fe49:5084/64 Scope:Link
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:18 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:0 (0.0 B)  TX bytes:1596 (1.5 KB)

lo        Link encap:Local Loopback  
          inet addr:127.0.0.1  Mask:255.0.0.0
          inet6 addr: ::1/128 Scope:Host
          UP LOOPBACK RUNNING  MTU:65536  Metric:1
          RX packets:22 errors:0 dropped:0 overruns:0 frame:0
          TX packets:22 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:0 
          RX bytes:2373 (2.3 KB)  TX bytes:2373 (2.3 KB)

lo:0      Link encap:Local Loopback  
          inet addr:192.168.10.11  Mask:255.255.255.255
          UP LOOPBACK RUNNING  MTU:65536  Metric:1

通过ifconfig在系统重启之后会丢失，可以尝试第二种方式。

2. 编辑/etc/network/interfaces配置文件

用vi打开该配置文件找到如下几行

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# The loopback network interface
auto lo
iface lo inet loopback

进行编辑后保存退出，然后重启service networking restart服务，再用ifconfig -a查看，将会看到和第一步配置以后一样的内容

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auto lo lo:0
iface lo inet loopback

iface lo:0 inet static
      address 192.168.10.11
      netmask 255.255.255.255