Coherence clustering between two separate wka clusters

Hi,
I am running Coherence 3.6 in my environment.Off lately I am seeing a weird issue with respect to two separate wka clusters. when I mean separate wka cluster, these are two clusters configured with a distinct wka list.
I try to connect with Coherence cmd line tool to a cluster named "cluster-ABC" which has a wka IP- 10.30.xx.xxx on "host x". Then I come out of this cluster, and connect from the same command prompt window to another host -"host y" which has a same named cluster-"cluster-ABC" but a different wka IP-10.30.yy.yyy. Between the two clusters, the only common factor is the cluster name. Other things such as wka list etc are different.
After some time, I see that nodes from "host y" start joining "host x". this seems to happen only when i connect to two different clusters, from my command line utility. The clusters here are formed using wka in each case. there is no multicast enabled on our setups. This used to never happen with coherence 3.5, where i did similar kind of operations on the cluster.
Is there some kind of reference being held by the utility even after it is disconnected from the second cluster?
Thanks,
Chandini

We tried out your suggestion on using unique cluster names. I had 2 hosts each running a cluster with a unique cluster name; cluster-A and cluster-B. I had another node on a third host connect to cluster-A using port 8092 and then tried connecting to the cluster-B after changing the cluster name appropriately. But, this time the node was rejected by cluster-A saying that the configurations are different.
On changing the port from 8092 to 8090 and connecting to cluster-B worked just fine. I guess, just having unique cluster names isn't helping. Would this be fixed by the ticket that's been raised?
Is there anything else we could do in the interim to get around the issue? Using different ports might not be a very helpful solution as we've noticed that 3.6 onwards, we need to open up the ports in the firewall of the host where the nodes are running. This wouldn't be too feasible for us.
-Roshan

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