Get site local ip in Java, skipping loopback, docker etc

SiteLocalIp.java

package io.github.kribblo.ip;

import java.net.*;
import java.util.Collections;

public class SiteLocalIp {
    public static String getSiteLocalIp() throws SocketException, UnknownHostException {
        return Collections.list(NetworkInterface.getNetworkInterfaces()).stream()
            .filter(SiteLocalIp::isValidInterface)
            .flatMap(i -> Collections.list(i.getInetAddresses()).stream())
            .filter(ip -> ip instanceof Inet4Address && ip.isSiteLocalAddress())
            .findFirst().orElse(InetAddress.getLocalHost())
            .getHostAddress();
    }

    private static boolean isValidInterface(NetworkInterface networkInterface) {
        try {
            return networkInterface.isUp() && !networkInterface.isVirtual() && !networkInterface.isLoopback();
        } catch(SocketException e) {
            return false;
        }
    }
}