Some tests cannot run successfully in our testing infrastructure so we added a closed/ProblemList.txt to exclude these.

One example is:

$ ack NoLoopbackPackets ProblemList.txt closed/ProblemList.txt
ProblemList.txt
166:java/net/MulticastSocket/NoLoopbackPackets.java 7122846 macosx-all

closed/ProblemList.txt
5:java/net/MulticastSocket/NoLoopbackPackets.java

As you can see we want to exclude the test on all platforms but it doesn't work. The test is still run on Linux.