我有两台电脑使用 VRRP 进行冗余.因此，每台 PC (Linux) 都有一个物理 IP 地址和一个虚拟 IP 地址.

I've two pc using VRRP for redundancy. So every PC (Linux) has a physical and a Virtual IP address.

我有一个带有 UDP 协议的客户端/服务器架构的软件 (C++).软件将监听套接字绑定在0.0.0.0"上，每次需要向对方发送一些数据时使用一个新的套接字.使用wireshark，我看到当它发送数据时，源IP是物理IP...如何将发送套接字的源地址设置为虚拟的??

I've a software (C++) with a client/server architecture with UDP protocol. The software bind the listen socket on "0.0.0.0" and use a new socket every time it needs to send some data to the other party. With wireshark I saw that when it sends data the source IP is the phisycal one... How can I set the source address of the sending socket to the Virtual one??

注意:使用 ifconfig 我只看到带有物理地址的 eth0...

NOTE: Whit ifconfig I see only eth0 with the physical address...

推荐答案

当内核需要通过套接字发送一些东西时，它会执行这些步骤

When the kernel needs to send something through a socket it performs these steps

所以你需要bind(2) 你的套接字到你想要的地址.更多信息:"源地址选择"在IP 路由"一章中《Linux IP 层网络管理指南》.

So you need to bind(2) your socket to your desired address. For more information: "Source Address Selection" in chapter "IP Routing" of "Guide to IP Layer Network Administration with Linux".