When i try to start a cluster with <RELAY /> tag on <UDP> stack it doesnt create a channel, and i get the following message.

13:17:51,977 ERROR [JGroupsTransport] Errors instantiating [org.jboss.ha.ispn.DefaultCacheContainerFactory$ChannelFactoryChannelLookup]! Not using a channel lookup.
13:17:51,984 INFO [JGroupsTransport] Unable to use any JGroups configuration mechanisms provided in properties

{channelLookup=org.jboss.ha.ispn.DefaultCacheContainerFactory$ChannelFactoryChannelLookup, stack=udp, channelFactory=org.jboss.ha.framework.server.JChannelFactory@47dce809, channelId=defaultGroup-HAPartition}

. Using default JGroups configuration!
13:17:52,115 INFO [JChannel] JGroups version: 2.12.1.Final