It says:
[2016-10-31T10:32:58,446][INFO ][o.e.b.BootstrapCheck ] [gbvlixaacas22t] bound or publishing to a non-loopback or non-link-local address, enforcing bootstrap checks
[2016-10-31T10:32:58,458][ERROR][o.e.b.Bootstrap ] [gbvlixaacas22t] node validation exception
bootstrap checks failed
It then only has the usual warnings which I don't plan to change as this is only a tiny test system and the same messages came up in the old version:
max file descriptors [32000] for elasticsearch process likely too low, increase to at least [65536]
max number of threads [1024] for user [uktja] likely too low, increase to at least [2048]
max virtual memory areas vm.max_map_count [65530] likely too low, increase to at least [262144]
What is a node validation exception?