Known issue? java/nio/channels/DatagramChannel/MulticastSendReceiveTests.java (original) (raw)

Alan Bateman Alan.Bateman at oracle.com
Sat Dec 31 10:31:28 UTC 2011

On 31/12/2011 01:31, Kelly O'Hair wrote:

Just wondering if anyone has seen this testcase failure. I'm using Fedora 9 x86.

-kto : Test DatagramChannel to INET socket join 225.4.5.6 @ virbr0 Send message from 192.168.122.1 -> group 225.4.5.6 (id=0x23b98c4a) Waiting to receive message STDERR: java.lang.RuntimeException: Expected message not recieved We've had test failures on systems with the ip6tables packet filter blocking IPv6 multicast packets but otherwise I can't think of any issues.

In this case the interface is virbr0 so I assume this is a virtual environment. I think this may need going through the libvirt configuration as I assume the issue is that IPv4 multicast packets aren't being forwarded.

-Alan.

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