IPv6 Nightmares. Why cant I not use!

[mark]

Fabio Massimo Di Nitto Wrote: 
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> mark wrote:
> 
> |>>IPv6.  Your suggested fix may not be the most "elegant", but it
> |>>certainly works.
> |>>
> |>>Would it be possible to use "modprobe -r" to more cleanly stop
> IPv6?
> 
> No, this is a "problem" in the linux kernel.
> 
> |>
> |>But I agree, there should be a more elegant way of doing it in an
> |>elegant
> |>distro like Ubuntu.
> 
> |
> | Well, I had to try it.  Unfortunately, -modprobe -rv ipv6- returns a
> | FATAL error, stating that "ipv6 is in use".  Sigh...
> |
> |
> 
> When the ipv6 module is loaded, it is immediatly marked as in use.
> The main problem is that it is not possible for the kernel to tell
> applications that a protocol is going away.
> iirc it is missing such a signal around and each application should be
> able to reconfigure itself. That's a pretty dangerous operation to
> perform, specially if you are using that protocol at unload time.
> There is also the problem for the kernel to understand which
> application
> is using the protocol.
> 
> There were several long discussions on the linux kernel mailing list
> explaining all the details of such operation. but in very short is not
> possible.
> 
> Fabio
> 
> PS In my short version of the story i might have missed some of the
> reasons (i don't recall all of them myslef).
> 
> - --
> <user> fajita: step one
> <fajita> Whatever the problem, step one is always to look in the error
> log.
> <user> fajita: step two
> <fajita> When in danger or in doubt, step two is to scream and shout.
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Quite all right - I'm a believer in the "Good enough" school of what
I'm trying to accomplish.  It still seems kinda crude to me (if any of
the kernel/module developers are listening).  I mean, if it's that much
of a problem, why load it (as default) at all?

Thanks again,

Mark


-- 
mark