I'm having trouble with multicast distribution on a single AIX machine between two JVM processes. Think ehcache or jgroups.
In order to enable on Mac OS X:
route add -net 126.96.36.199 -interface lo0
On Linux (from JGroups doco, untested)
route add -net 188.8.131.52 netmask 184.108.40.206 dev lo
What is the equivalent command for AIX?