Go で HTTP クライアントを特定の IP アドレスにバインドするにはどうすればよいですか?

<code class="go">import (
    "net"
    "net/http"
    "time"
)

func main() {
    // Parse the local IP address you want to use
    localAddr, err := net.ResolveIPAddr("ip", "<my local address>")
    if err != nil {
        panic(err)
    }

    // Create a TCPAddr from the IP address
    localTCPAddr := net.TCPAddr{
        IP: localAddr.IP,
    }

    // Initialize an http.Client with a custom DialContext
    webclient := &http.Client{
        Transport: &http.Transport{
            Proxy: http.ProxyFromEnvironment,
            DialContext: (&net.Dialer{
                LocalAddr:    &localTCPAddr,
                Timeout:     30 * time.Second,
                KeepAlive:   30 * time.Second,
                DualStack:   true,
            }).DialContext,
            MaxIdleConns:          100,
            IdleConnTimeout:       90 * time.Second,
            TLSHandshakeTimeout:   10 * time.Second,
            ExpectContinueTimeout: 1 * time.Second,
        },
    }

    // Make an HTTP request
    req, _ := http.NewRequest("GET", "http://www.google.com", nil)
    httpResponse, _ := webclient.Do(req)
    defer httpResponse.Body.Close()
}</code>