--- a/test/jdk/java/net/ServerSocket/UnreferencedSockets.java	Wed May 08 12:45:02 2019 -0700
+++ b/test/jdk/java/net/ServerSocket/UnreferencedSockets.java	Tue Apr 16 13:06:23 2019 -0700
@@ -23,6 +23,7 @@
 
 /**
  * @test
+ * @library /test/lib
  * @modules java.management java.base/java.io:+open java.base/java.net:+open
  * @run main/othervm UnreferencedSockets
  * @run main/othervm -Djava.net.preferIPv4Stack=true UnreferencedSockets
@@ -51,6 +52,8 @@
 
 import com.sun.management.UnixOperatingSystemMXBean;
 
+import jdk.test.lib.net.IPSupport;
+
 public class UnreferencedSockets {
 
     /**
@@ -107,6 +110,7 @@
     }
 
     public static void main(String args[]) throws Exception {
+        IPSupport.skipIfCurrentConfigurationIsInvalid();
 
         // Create and close a ServerSocket to warm up the FD count for side effects.
         try (ServerSocket s = new ServerSocket(0)) {