🎨 Improve the network serve address list https://github.com/siyuan-note/siyuan/issues/14943

Signed-off-by: Daniel <845765@qq.com>

kernel/util/net.go

@@ -33,6 +33,64 @@ import (
 	"github.com/siyuan-note/logging"
 )
 
+// GetPrivateIPv4s 获取本地所有的私有 IPv4 地址（排除虚拟网卡）
+func GetPrivateIPv4s() (ret []string) {
+	ret = []string{}
+
+	interfaces, err := net.Interfaces()
+	if err != nil {
+		return
+	}
+
+	// 常见的虚拟网卡名称关键字黑名单
+	virtualKeywords := []string{"docker", "veth", "br-", "vmnet", "vbox", "utun", "tun", "tap", "bridge", "cloud", "hyper-"}
+
+	for _, itf := range interfaces {
+		// 1. 基础状态过滤：必须是启动状态且不能是回环网卡
+		if itf.Flags&net.FlagUp == 0 || itf.Flags&net.FlagLoopback != 0 {
+			continue
+		}
+
+		// 2. 硬件地址过滤：物理网卡通常必须有 MAC 地址
+		if len(itf.HardwareAddr) == 0 {
+			continue
+		}
+
+		// 3. 名称过滤：排除已知虚拟网卡前缀
+		name := strings.ToLower(itf.Name)
+		isVirtual := false
+		for _, kw := range virtualKeywords {
+			if strings.Contains(name, kw) {
+				isVirtual = true
+				break
+			}
+		}
+		if isVirtual {
+			continue
+		}
+
+		// 4. 提取并校验 IP
+		addrs, err := itf.Addrs()
+		if err != nil {
+			continue
+		}
+
+		for _, addr := range addrs {
+			ipNet, ok := addr.(*net.IPNet)
+			if !ok {
+				continue
+			}
+
+			ip := ipNet.IP
+			// 仅保留 IPv4 且必须是私有局域网地址 (10.x, 172.16.x, 192.168.x)
+			if ip.To4() != nil && ip.IsPrivate() {
+				ret = append(ret, ip.String())
+			}
+		}
+	}
+	return
+}
+
 func IsLocalHostname(hostname string) bool {
 	if "localhost" == hostname || strings.HasSuffix(hostname, ".localhost") {
 		return true