The following tests failed in the JDK18 CI:

com/sun/jndi/dns/ConfigTests/PortUnreachable.java
com/sun/jndi/dns/ConfigTests/Timeout.java

Here's a snippet from the log file:

#section:main
----------messages:(5/359)----------
command: main -Djdk.net.usePlainDatagramSocketImpl=false PortUnreachable
reason: User specified action: run main/othervm -Djdk.net.usePlainDatagramSocketImpl=false PortUnreachable
Mode: othervm [/othervm specified]
Additional options from @modules: --add-modules java.base --add-exports java.base/sun.security.util=ALL-UNNAMED
elapsed time (seconds): 15.223
----------configuration:(4/111)----------
Boot Layer
  add modules: java.base
  add exports: java.base/sun.security.util ALL-UNNAMED

----------System.out:(2/74)----------
Skip local DNS Server creation
Bug 7164518 can cause this failure on mac
----------System.err:(30/2348)----------
javax.naming.CommunicationException: DNS error [Root exception is java.net.SocketTimeoutException: Receive timed out]; remaining name ''
at jdk.naming.dns/com.sun.jndi.dns.DnsClient.query(DnsClient.java:316)
at jdk.naming.dns/com.sun.jndi.dns.Resolver.query(Resolver.java:81)
at jdk.naming.dns/com.sun.jndi.dns.DnsContext.c_getAttributes(DnsContext.java:434)
at java.naming/com.sun.jndi.toolkit.ctx.ComponentDirContext.p_getAttributes(ComponentDirContext.java:235)
at java.naming/com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:141)
at java.naming/com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:129)
at java.naming/javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:171)
at java.naming/javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:166)
at PortUnreachable.runTest(PortUnreachable.java:76)
at TestBase.launch(TestBase.java:82)
at TestBase.run(TestBase.java:50)
at PortUnreachable.main(PortUnreachable.java:60)
at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
at java.base/java.lang.reflect.Method.invoke(Method.java:577)
at com.sun.javatest.regtest.agent.MainWrapper$MainThread.run(MainWrapper.java:127)
at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.net.SocketTimeoutException: Receive timed out
at java.base/sun.nio.ch.DatagramChannelImpl.trustedBlockingReceive(DatagramChannelImpl.java:703)
at java.base/sun.nio.ch.DatagramChannelImpl.blockingReceive(DatagramChannelImpl.java:633)
at java.base/sun.nio.ch.DatagramSocketAdaptor.receive(DatagramSocketAdaptor.java:240)
at java.base/java.net.DatagramSocket.receive(DatagramSocket.java:701)
at jdk.naming.dns/com.sun.jndi.dns.DnsClient.doUdpQuery(DnsClient.java:425)
at jdk.naming.dns/com.sun.jndi.dns.DnsClient.query(DnsClient.java:214)
... 15 more

JavaTest Message: Test threw exception: javax.naming.CommunicationException: DNS error [Root exception is java.net.SocketTimeoutException: Receive timed out]; remaining name ''
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: javax.naming.CommunicationException: DNS error [Root exception is java.net.SocketTimeoutException: Receive timed out]; remaining name '' Timeout
----------System.out:(1/32)----------
Skip local DNS Server creation
----------System.err:(34/2489)----------
javax.naming.CommunicationException: DNS error [Root exception is java.net.SocketException: Network is unreachable]; remaining name ''
at jdk.naming.dns/com.sun.jndi.dns.DnsClient.query(DnsClient.java:316)
at jdk.naming.dns/com.sun.jndi.dns.Resolver.query(Resolver.java:81)
at jdk.naming.dns/com.sun.jndi.dns.DnsContext.c_getAttributes(DnsContext.java:434)
at java.naming/com.sun.jndi.toolkit.ctx.ComponentDirContext.p_getAttributes(ComponentDirContext.java:235)
at java.naming/com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:141)
at java.naming/com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.getAttributes(PartialCompositeDirContext.java:129)
at java.naming/javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:171)
at java.naming/javax.naming.directory.InitialDirContext.getAttributes(InitialDirContext.java:166)
at Timeout.runTest(Timeout.java:78)
at TestBase.launch(TestBase.java:82)
at TestBase.run(TestBase.java:50)
at Timeout.main(Timeout.java:61)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:568)
at com.sun.javatest.regtest.agent.MainActionHelper$AgentVMRunnable.run(MainActionHelper.java:333)
at java.base/java.lang.Thread.run(Thread.java:842)
Caused by: java.net.SocketException: Network is unreachable
at java.base/sun.nio.ch.DatagramChannelImpl.receive0(Native Method)
----------rerun:(39/7355)*----------




com/sun/jndi/dns/ConfigTests/Timeout.java