Resolution:
TIBCO BusinessEvents engine fails to start with error of "Failed connecting to [Metaspace:XXXXXXXX] with error TIBAS_SYS_ERROR (multicast_error - (8) grp_iface not a valid multicast interface)".

Description:
============
The TIBCO BusinessEvents engine will not start because of a configuration error that prevents multicast communication.

Environment:
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TIBCO BusinessEvents (BE) 5.0.1 - UNIX only.

Symptoms:
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Failure to start with the error message that the specified interface is not correct for multicast communication.

Cause:
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/etc/hosts file was incorrect having 127.0.0.1 as the first line for the name of the host.

Resolution:
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Run the command : java -jar as-admin.jar in the &ltas-home>/lib folder, connect discovery "tibpgm://2233/0.0.0.0;239.100.100.22/" and diagnose the problem from the message.

The message said in this instance that 127.0.0.1 was detected and that it will not be able to accept connection from the Metaspace.

Change the /etc/hosts file with an IP address for the machine.