TUNNEL does not close its sock in #destroy()

Noticed when reloading the server.

15:58:16,189 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool – 68) MSC000001: Failed to start service org.wildfly.clustering.jgroups.channel.ee: org.jboss.msc.service.StartException in service org.wildfly.clustering.jgroups.channel.ee: java.net.BindException: Address already in use (Bind failed)
at org.jboss.as.clustering.jgroups.subsystem.ChannelBuilder.start(ChannelBuilder.java:104)
at org.wildfly.clustering.service.AsynchronousServiceBuilder.lambda$start$0(AsynchronousServiceBuilder.java:99)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at java.lang.Thread.run(Thread.java:748)
at org.jboss.threads.JBossThread.run(JBossThread.java:320)
Caused by: java.net.BindException: Address already in use (Bind failed)
at java.net.PlainDatagramSocketImpl.bind0(Native Method)
at java.net.AbstractPlainDatagramSocketImpl.bind(AbstractPlainDatagramSocketImpl.java:93)
at java.net.DatagramSocket.bind(DatagramSocket.java:392)
at java.net.DatagramSocket.<init>(DatagramSocket.java:242)
at java.net.DatagramSocket.<init>(DatagramSocket.java:299)
at org.jgroups.util.DefaultSocketFactory.createDatagramSocket(DefaultSocketFactory.java:62)
at org.jgroups.protocols.TUNNEL.init(TUNNEL.java:142)
at org.jgroups.stack.ProtocolStack.initProtocolStack(ProtocolStack.java:861)
at org.jgroups.stack.ProtocolStack.init(ProtocolStack.java:831)
at org.jboss.as.clustering.jgroups.JChannelFactory.createChannel(JChannelFactory.java:108)
at org.jboss.as.clustering.jgroups.subsystem.ChannelBuilder.start(ChannelBuilder.java:102)
... 5 more