Two tests in the JGroups testsuite, MergeTest and MultiplexerMergeTest, make use of a GossipRouter instance to simulate a network partition.
Within the test cases, the GossipRouter was started with a fixed host IP address of 127.0.0.1 and a fixed port of 12001.
Need to make the GossipRouter host and port configurable, so that it can be tested against IP address and ports other than the defaults.