[GSS](7.0.z) Undertow mod_cluster: can not isolate the environments by adverting port

For the configuration below, the node1 (backend) is registered to mod_cluster load balancer. It is necessary to configure different multicast address to isolate the node.

• node1 (backend):

          <socket-binding name="modcluster" port="0" multicast-address="224.0.1.105" multicast-port="23364"/>
  

• load-balancer server:

          <socket-binding name="modcluster" port="0" fixed-port="false" multicast-address="224.0.1.105" multicast-port="23565"/>