java/net/InetAddress/IsReachableViaLoopbackTest.java and some other test failed with the following Exception:

java.lang.RuntimeException: Unexpected exception:java.net.UnknownHostException: bugs.openjdk.java.net: Name or service not known
at IsReachableViaLoopbackTest.main(IsReachableViaLoopbackTest.java:36)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(java.base@9-internal/Native Method)
at jdk.internal.reflect.NativeMethodAccessorImpl.invoke(java.base@9-internal/NativeMethodAccessorImpl.java:62)
at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(java.base@9-internal/DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(java.base@9-internal/Method.java:537)
at com.sun.javatest.regtest.agent.MainActionHelper$SameVMRunnable.run(MainActionHelper.java:226)
at java.lang.Thread.run(java.base@9-internal/Thread.java:844)

I suspect this may be an intermittent environment network issue.