环境Time2022-11-20VirtualBox7.0.2Rust1.65.0pnet0.31.0CentOS7前言说明参考：https://docs.rs/pnet_packet/latest/pnet_packet/index.html目标使用两台虚拟机，启动CentOS系统，然后进行跨主机的通信。主机1网卡[root@centos7~]#hostnamecentos7[root@cento