Linux 网卡出口 ip 设定

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This topic created in 3146 days ago, the information mentioned may be changed or developed.

ubuntu 系统，两个公网 ip 同一个物理网卡上

eth0      Link encap:Ethernet  HWaddr 88:23:ac:07:5a:7c  
          inet addr:118.118.182.89  Bcast:118.118.182.255  Mask:255.255.254.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1
          RX packets:122222 errors:0 dropped:0 overruns:0 frame:0
          TX packets:122222 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000 
          RX bytes:36394218 (30 MiB)  TX bytes:42491387 (40 MiB)

eth0:0    Link encap:Ethernet  HWaddr 88:23:ac:07:5a:7c  
          inet addr:118.118.182.90  Bcast:118.118.182.255  Mask:255.255.254.0
          UP BROADCAST RUNNING MULTICAST  MTU:1500  Metric:1

问题，如何让流量从哪个 ip 进就从哪个 ip 出？

1 replies • 2017-10-19 18:22:19 +08:00

raysonx

Oct 19, 2017 via Android

发送方的 socket 如果 bind 了某个 IP，那么出口就是那个 IP。
否则看路由表`ip r`