- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: master
* Operating System version: all platform
* Java version: all version

### Steps to reproduce this issue

1. set SystemProperty "java.net.preferIPv6Addresses" to true.
2. call org.apache.dubbo.common.utils.NetUtils#isPreferIPV6Address().
3. check the return value.

### Expected Result

org.apache.dubbo.common.utils.NetUtils#isPreferIPV6Address() will return true when SystemProperty "java.net.preferIPv6Addresses" set to true.

### Actual Result

org.apache.dubbo.common.utils.NetUtils#isPreferIPV6Address() method ignore SystemProperty "java.net.preferIPv6Addresses" and always return false
}
        return host;
    }
    public static String getIpByConfig() {
        String configIp = ConfigurationUtils.getProperty(DUBBO_IP_TO_BIND);
        if (configIp != null) {
            return configIp;
        }
        return getIpByHost(getLocalAddress().getHostName());
    }
    /**
     * Find first valid IP from local network card
     *
     * @return first valid local IP
     */
    public static InetAddress getLocalAddress() {
        if (LOCAL_ADDRESS != null) {
            return LOCAL_ADDRESS;
        }
        InetAddress localAddress = getLocalAddress0();
        LOCAL_ADDRESS = localAddress;
        return localAddress;
    }
    private static Optional<InetAddress> toValidAddress(InetAddress address) {
        if (address instanceof Inet6Address) {
            Inet6Address v6Address = (Inet6Address) address;
            if (isPreferIPV6Address()) {
                return Optional.ofNullable(normalizeV6Address(v6Address));
            }
        }