Since June 11th 2025 we see a number of timeouts in test java/nio/channels/SocketChannel/OpenLeak.java on UNIX platforms.
Example :

----------configuration:(0/0)----------
----------System.out:(1/37)----------
Timeout signalled after 1080 seconds
----------System.err:(28/1489)----------
STARTED OpenLeak::test '[1] localhost/<unresolved>:47, class java.nio.channels.UnresolvedAddressException'

Expecting class java.nio.channels.UnresolvedAddressException for localhost/<unresolved>:47
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
java.nio.channels.UnresolvedAddressException
SUCCESSFUL OpenLeak::test '[1] localhost/<unresolved>:47, class java.nio.channels.UnresolvedAddressException' [84849ms]
STARTED OpenLeak::test '[2] localhost/127.0.0.1:47, class java.net.ConnectException'

Expecting class java.net.ConnectException for localhost/127.0.0.1:47
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
java.net.ConnectException: Connection refused
SUCCESSFUL OpenLeak::test '[2] localhost/127.0.0.1:47, class java.net.ConnectException' [991429ms]