Hi all,

On Linux, IPv6 comes with the the kernel. You can either activated or not during configuration of it.
This can be done since 2.4 version.

So distributions with recent kernels don't have trouble with it because there are released with 2.6 kernel and with IPv6 activated by default.
Be careful, "activated" means you can either use it or not.

Since 1.4 sdk (sun), you can code java taking care of IPv6 in your application.

In the opposite way, sometimes IPv6 with JVM is bothering us and so we use this option : -Djava.net.preferIPv4Stack=true

Finally, Tomcat is just a container for application and, as mention by Mark, application may be patch to work.


Lionel


Mark H. Wood wrote:
Well.  That depends on what the application does.  An application
which makes no assumptions about the size of an address and does not
inspect or process addresses in any way should not care whether it is
dealing with IPv6.  Things like the RemoteAddrValve should be checked
carefully before depending on them to be unaffected.

(RemoteAddrValve itself shouldn't be a problem, but your patterns
might be, and so might the JVM's treatment of v4 vs. v6 addresses.)

There are also URI manipulation subtleties.

I expect that *most* applications won't care -- the spec. writers seem
to have done a thorough job.  But I wouldn't be surprised to find that
there are applications which will need some fixing for v6.

Have a look at this for starters:

  http://java.sun.com/javase/6/docs/technotes/guides/net/ipv6_guide/index.html


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