粘贴直接就能用

private string GetIP()
    {
        NetworkInterface[] adapters = NetworkInterface.GetAllNetworkInterfaces();
        foreach (NetworkInterface adater in adapters)
        {
            if (adater.Supports(NetworkInterfaceComponent.IPv4))
            {
                UnicastIPAddressInformationCollection UniCast = adater.GetIPProperties().UnicastAddresses;
                if (UniCast.Count > 0)
                {
                    foreach (UnicastIPAddressInformation uni in UniCast)
                    {
                        if (uni.Address.AddressFamily == AddressFamily.InterNetwork)
                        {
                            Debug.Log(uni.Address.ToString());
                            return uni.Address.ToString();
                        }
                    }
                }
            }
        }
        return null;
    }