linux slave won't connect

[Brian]

I have a vmware box running 3 linux machines configured the same bar ip details etc, one of them has suddenly failed to connect.

[08/09/16 16:45:22] [SSH] Authentication successful.
[08/09/16 16:45:22] [SSH] The remote users environment is:
BASH=/bin/bash
BASHOPTS=cmdhist:extquote:force_fignore:hostcomplete:interactive_comments:progcomp:promptvars:sourcepath
BASH_ALIASES=()
BASH_ARGC=()
BASH_ARGV=()
ERROR: Unexpected error in launching a slave. This is probably a bug in Jenkins
java.util.concurrent.CancellationException
	at java.util.concurrent.FutureTask.report(FutureTask.java:121)
	at java.util.concurrent.FutureTask.get(FutureTask.java:192)
	at hudson.plugins.sshslaves.SSHLauncher.launch(SSHLauncher.java:754)
	at hudson.slaves.SlaveComputer$1.call(SlaveComputer.java:253)
	at jenkins.util.ContextResettingExecutorService$2.call(ContextResettingExecutorService.java:46)
	at java.util.concurrent.FutureTask.run(FutureTask.java:266)
	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
	at java.lang.Thread.run(Thread.java:745)

[Gergely Brautigam]

Have you tried restarting it? Is there an ip collision?

[Brian]

There is no ip conflict and each vm has it's own dedicated ethernet port/mac