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The JGroups channels in the AS by default open a multicast socket for receiving diagnostic requests from JGroups' Probe utility. By default they listen on multicast address 126.96.36.199, and it sounds like the NIC you're using doesn't support IPv4 addresses.
A couple simple solutions:
1) Turn off diagnostics by including this in your startup command:
2) Configure a different (IPv6) address by including this in your startup command:
-Djboss.jgroups.diagnostics_addr=<some IPv6 multicast address>
A bit less simple is to edit the server/<your config>/deploy/cluster/jgroups-channelfactory.sar/META-INF/jgroups-channelfactory-stacks.xml file and find the locations of "enable_diagnostics" or "diagnostics_addr" and change the values.
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