[jboss-user] [Clustering/JBoss] - Re: jgroups Draw demo fails

[bela@jboss.com]

Just before creating the MulticastSocket, check whether that port is already taken:
netstat -na|grep 45588 (or whatever the value of mcast_port is).
Other MulticastSockets being open on 45588 is not an issue, but a datagram socket might be.
Also try -Djava.net.preferIPv4Stack=true

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