Cannot connect to Domain Controller with JBoss CLI

Issue

• Connection to domain controller always fails.
• Connection to domain controller initially fails but then connects every time.
• The connection fails with the following exception:

org.jboss.as.cli.CliInitializationException: Failed to connect to the controller
        at org.jboss.as.cli.impl.CliLauncher.initCommandContext(CliLauncher.java:280)
        at org.jboss.as.cli.impl.CliLauncher.main(CliLauncher.java:258)
        at org.jboss.as.cli.CommandLineMain.main(CommandLineMain.java:34)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
        at java.lang.reflect.Method.invoke(Method.java:616)
        at org.jboss.modules.Module.run(Module.java:270)
        at org.jboss.modules.Main.main(Main.java:411)
Caused by: org.jboss.as.cli.CommandLineException: The controller is not available at x.x.x.x:9999
        at org.jboss.as.cli.impl.CommandContextImpl.tryConnection(CommandContextImpl.java:951)
        at org.jboss.as.cli.impl.CommandContextImpl.connectController(CommandContextImpl.java:790)
        at org.jboss.as.cli.impl.CommandContextImpl.connectController(CommandContextImpl.java:766)
        at org.jboss.as.cli.impl.CliLauncher.initCommandContext(CliLauncher.java:278)
        ... 8 more
Caused by: java.io.IOException: java.net.ConnectException: JBAS012144: Could not connect to remote://x.x.x.x:9999. The connection timed out
        at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeForResult(AbstractModelControllerClient.java:129)
        at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:71)
        at org.jboss.as.cli.impl.CommandContextImpl.tryConnection(CommandContextImpl.java:929)
        ... 11 more
Caused by: java.net.ConnectException: JBAS012144: Could not connect to remote://x.x.x.x:9999. The connection timed out
        at org.jboss.as.protocol.ProtocolConnectionUtils.connectSync(ProtocolConnectionUtils.java:131)
        at org.jboss.as.protocol.ProtocolConnectionManager$EstablishingConnection.connect(ProtocolConnectionManager.java:256)
        at org.jboss.as.protocol.ProtocolConnectionManager.connect(ProtocolConnectionManager.java:70)
        at org.jboss.as.protocol.mgmt.FutureManagementChannel$Establishing.getChannel(FutureManagementChannel.java:176)
        at org.jboss.as.cli.impl.CLIModelControllerClient.getOrCreateChannel(CLIModelControllerClient.java:155)
        at org.jboss.as.cli.impl.CLIModelControllerClient$2.getChannel(CLIModelControllerClient.java:117)
        at org.jboss.as.protocol.mgmt.ManagementChannelHandler.executeRequest(ManagementChannelHandler.java:115)
        at org.jboss.as.protocol.mgmt.ManagementChannelHandler.executeRequest(ManagementChannelHandler.java:90)
        at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeRequest(AbstractModelControllerClient.java:236)
        at org.jboss.as.controller.client.impl.AbstractModelControllerClient.execute(AbstractModelControllerClient.java:141)
        at org.jboss.as.controller.client.impl.AbstractModelControllerClient.executeForResult(AbstractModelControllerClient.java:127)
        ... 13 more