8267544: (test) rmi test NonLocalSkeleton fails if network has multip…

…le adapters with the same address

Reviewed-by: dfuchs

test/jdk/java/rmi/registry/nonLocalRegistry/NonLocalSkeletonTest.java

@@ -37,6 +37,7 @@
 import java.rmi.server.RemoteObjectInvocationHandler;
 import java.security.AccessController;
 import java.security.PrivilegedAction;
+import java.util.Arrays;
 import java.util.Set;
 
 
@@ -85,8 +86,8 @@ public static void main(String[] args) throws Exception {
 
         // Check if running the test on a local system; it only applies to remote
         String myHostName = InetAddress.getLocalHost().getHostName();
-        Set<InetAddress> myAddrs = Set.of(InetAddress.getAllByName(myHostName));
-        Set<InetAddress> hostAddrs = Set.of(InetAddress.getAllByName(host));
+        Set<InetAddress> myAddrs = Set.copyOf(Arrays.asList(InetAddress.getAllByName(myHostName)));
+        Set<InetAddress> hostAddrs = Set.copyOf(Arrays.asList(InetAddress.getAllByName(host)));
         boolean isLocal = (hostAddrs.stream().anyMatch(i -> myAddrs.contains(i))
                 || hostAddrs.stream().anyMatch(h -> h.isLoopbackAddress()));