diff --git a/templates/iptables-rules.v4.j2 b/templates/iptables-rules.v4.j2
index e92dd99..9c060db 100644
--- a/templates/iptables-rules.v4.j2
+++ b/templates/iptables-rules.v4.j2
@@ -201,10 +201,13 @@
 {% endif %}
 
 {% if jgroups_cluster_enabled %}
-# tomcat/jboss/wildfly cluster
+# infinispan/jgroups
 -A INPUT -m pkttype --pkt-type multicast -d {{ jgroups_multicast_addr }} -j ACCEPT
--A INPUT -m pkttype --pkt-type multicast -d {{ jgroups_mping_multicast_addr | default(jgroups_multicast_addr) }} -j ACCEPT
+{% if jgroups_mping_multicast_addr is defined and jgroups_mping_multicast_addr != jgroups_multicast_addr %}
+-A INPUT -m pkttype --pkt-type multicast -d {{ jgroups_mping_multicast_addr }} -j ACCEPT
+{% endif %}
 -A INPUT -m state --state NEW -p tcp -m tcp --dport {{ jgroups_multicast_port }} -j ACCEPT
+-A INPUT -p udp -m udp --dport {{ jgroups_multicast_port }} -j ACCEPT
 {% if jgroups_multicast_net is defined %}
 -A INPUT -d {{ jgroups_multicast_net }} -j ACCEPT
 {% endif %}