Hi there. Again a quick one.

I had some problem with java on Debian. My Minecraft server started broadcasting only on ipv6.

I needed to change that.

I found two solutions:

1. for the hole system to use only ipv4. Look here.

2. Add one line of code, to user ./bash_profile or ./profile file in home dir

To force java to run only ipv4, add this line of code to your ./bash_profile or ./profile fine in your home dir (command mode)

export _JAVA_OPTIONS=”-Djava.net.preferIPv4Stack=true”


Reboot machine.

Minecraft Linux server – force use of ipv4
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