Listen on UDP IPV4 Port 1514

Graylog Central (peer support)
4

Couple of quick points here:

  • 4.0.6 is the latest version of Graylog. If you’re installing 3.3.X, I assume you got to that version of the docs through a search of some sort.
  • You should be able to add the -Djava.net.preferIPv4Stack=true to the environment variable GRAYLOG_SERVER_JAVA_OPTS in /etc/default/graylog-server and restart Graylog to have it use IPv4 explicitly
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