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From "Norval Hope" <>
Subject Re: ApacheDS and ipv6 support on windows
Date Thu, 17 Jan 2008 01:58:36 GMT
I'm cross posting this query to the MINA dev list about support for ApacheDS
listening on an ipv6 socket on Windows.
My first posting was:

I was recently flabbergasted to find out that no Sun JDK 1.5+ supports NIO
sever support over ipv6 on any version of Windows (due to lack of support
for dual-mode sockets in the underlying Windows stack implementation), and
that the situation is only likely to be resolved in the future in JDK 7 on
top of Vista (refer ).

Hence my current understanding is that clients who want ApacheDS to listen
on an ipv6 socket at start-up will have to use a Unix variant on which the
JDK doesn't suffer this problem. Have I missed / misunderstsood anything
here, or is there perhaps another JDK implementation with an enhanced NIO
implementation (or some other cunning technique) that may represent a "get
out of jail" card for me and my clients as far as pre-Vista Windows is

Many thanks.

As MINA (very sensibly) uses NIO server socket channels, it unfortunately
seems there will be a problem until an extension is made to JDK 7 running on
top of Vista. Note the bug link above provides a test program which can be
used to verify whether a particular configuration displays the problem or

I'm not sure if running a different JDK implementation may help due to
different bundled NIO implementations, but this is most probably not really
an option for my customers.

Any help / comments greatly appreciated.

On Jan 17, 2008 2:24 AM, Emmanuel Lecharny <> wrote:

> Alex Karasulu wrote:
> > I don't know about this but MINA may be a consideration here.  Does
> > MINA allow for IPv6?  Does it care?
> The problem is that IPV6 is the default stack on Windows... Unless we
> see an urge of Linux and MacOSX stations, we may have some kind of
> problem... (btw, I think that linux will see a huge increase as Asus eee
> and similar computers will be sold by millions soon ...)
> But I thought that if your desktop is IPV6 based, it should still be
> able to communicate with a IPV4 stack, otherwise, I can't see how those
> millions computers installed with many flavors of
> W$+Virii+spywares+rootkits will be able to connect to all those retarded
> web sites which still use Linux + Apache HTTPd server on a IPV4 stack ...
> Don't know exactly... I'm not really a specialist. May be posting this
> question to MINA will be the best move !
> >
> > I've not even considered IPv6.  I'm not really interested in it at
> > this point but if we have to move to JDK 1.7 to support it people are
> > going to be really pissed off.  Yet another ugly balancing act.
> >
> > Alex
> >
> > On Jan 16, 2008 7:14 AM, Emmanuel Lecharny <
> > <>> wrote:
> >
> >     Norval Hope wrote:
> >     > Thanks for the feedback.
> >     >
> >     > However, my problem is the other way around - i.e. the client
> wants
> >     > ApacheDS to listen on an ipv6 socket only.
> >     Have you tried with JRockit or IBM JVM?
> >
> >     --
> >     --
> >     cordialement, regards,
> >     Emmanuel L├ęcharny
> > <>
> > <>
> >
> >
> >
> --
>  --
> cordialement, regards,
> Emmanuel L├ęcharny

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