[Bug 486215] Re: Network unreachable in java only

[Heikki Henriksen]

This is a symptom of a bug in sun's java6 regarding ipv6.

Try 
$ /sbin/sysctl net.ipv6.bindv6only

If this value is 1 you need to disable the setting:

$ sudo /sbin/sysctl net.ipv6.bindv6only=0

For a persistent fix:
Check /etc/sysctl.conf and /etc/sysctl.d/* for this setting and restart procfs after changing it.

If this was your problem, you should have networking back :)

Cheers.

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Network unreachable in java only
https://bugs.launchpad.net/bugs/486215
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