如何在Go中通过特定的网络接口发送ICMP报文？

package main

import (
    "fmt"
    "net"
    "os"
    "syscall"
    "time"
)

func main() {
    // 目标地址
    targetIP := net.ParseIP("目标IP地址")

    // 构建ICMP报文
    icmpMsg := icmp.Message{
        Type: ipv4.ICMPTypeEcho, // ICMP回显请求类型
        Code: 0,
        Body: &icmp.Echo{
            ID:   os.Getpid() & 0xffff,
            Seq:  1,
            Data: []byte("Hello, ICMP!"),
        },
    }

    // 序列化ICMP报文
    icmpData, err := icmpMsg.Marshal(nil)
    if err != nil {
        fmt.Println("Failed to marshal ICMP message:", err)
        return
    }

    // 创建IPConn对象
    conn, err := net.DialIP("ip4:icmp", nil, &net.IPAddr{IP: net.IPv4zero})
    if err != nil {
        fmt.Println("Failed to create IP connection:", err)
        return
    }
    defer conn.Close()

    // 设置超时时间
    conn.SetDeadline(time.Now().Add(time.Second * 5))

    // 发送ICMP报文
    _, err = conn.WriteTo(icmpData, &net.IPAddr{IP: targetIP})
    if err != nil {
        fmt.Println("Failed to send ICMP message:", err)
        return
    }

    // 接收ICMP回复报文
    reply := make([]byte, 1500)
    _, _, err = conn.ReadFrom(reply)
    if err != nil {
        fmt.Println("Failed to receive ICMP reply:", err)
        return
    }

    // 解析ICMP回复报文
    icmpReply, err := icmp.ParseMessage(syscall.AF_INET, reply)
    if err != nil {
        fmt.Println("Failed to parse ICMP reply:", err)
        return
    }

    // 判断是否接收到了预期的回复
    switch icmpReply.Type {
    case ipv4.ICMPTypeEchoReply:
        fmt.Println("Received ICMP echo reply")
    default:
        fmt.Println("Received unexpected ICMP message:", icmpReply.Type)
    }
}