1.此方法只能获取众多Mac中的一个

    private static string GetMacAddress(){string physicalAddress = "";NetworkInterface[] nice = NetworkInterface.GetAllNetworkInterfaces();foreach (NetworkInterface adaper in nice){Debug.Log(adaper.Description);if (adaper.Description == "en0"){physicalAddress = adaper.GetPhysicalAddress().ToString();break;}else{physicalAddress = adaper.GetPhysicalAddress().ToString();if (physicalAddress != ""){break;};}}return physicalAddress;}

2.此处获取活跃的Mac：当前wifi使用的mac地址，如果想要以太网的mac  将Wireless80211 改为Ethernet

public static string GetmacAddress(){string strphysicalAddress = "";var interfaces = NetworkInterface.GetAllNetworkInterfaces();foreach (var iface in interfaces){if (iface.NetworkInterfaceType == NetworkInterfaceType.Wireless80211 && iface.OperationalStatus == OperationalStatus.Up){var physicalAddress = iface.GetPhysicalAddress();var macAddress = physicalAddress.ToString();Debug.Log("Current MAC address: " + macAddress);strphysicalAddress = macAddress;break;}else{var physicalAddress = iface.GetPhysicalAddress();var macAddress = physicalAddress.ToString();Debug.Log("没网的 MAC address: " + macAddress);}}return strphysicalAddress;}