import static com.google.common.base.Preconditions.checkArgument;
+import com.google.common.base.Preconditions;
+import com.google.common.base.Strings;
+import com.google.common.net.InetAddresses;
+
import java.net.Inet4Address;
import java.net.InetAddress;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
-import com.google.common.base.Preconditions;
-import com.google.common.base.Strings;
-import com.google.common.net.InetAddresses;
-
public class Utils {
private static final String MASK_32 = "/32";