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Re: IPv6 in Debian



On Jul 30, 2007 Stephen Gran wrote:
This one time, at band camp, Tomas Pospisek said:
> Hallo Release Team,
>
> I've read in the release goals:
>
> >RELEASE GOALS
> >=============
> >
> >* full IPv6 support
> > Advocate: Martin Zobel-Helas
>
> and wrote to Martin Zobel-Helas who redirected me here.
>
> My experience with IPv6 in Debian is foremost that it's a pita.
>
> Debian enables IPv6 by default.
>
> * AAAA before A DNS lookup

This is pretty standard behavior, really.  I haven't seen any real
problems because of it, but I can imagine it being an issue.  It is
easily solved by blacklisting, however.

> * Software that binds to the first socket found
>
>   Then there's software that binds to the first port it gets and is
>   difficult to teach not to do so. [2]

All the hits on that page are for dccproc.  Are there others that are
that broken?  I don't see any bug reports from you about it, or actually
any bug reports about this issue.  Can you report it if it's a problem?

It *can* be solved by tweaking the deamon's config in this particular case.

> * The cost of disabling IPv6
>
> Once the kernel has loaded the ipv6 module, one can not get it > rmmod'ed (or not easily - I have not figured out how to do this > remotely on a hosted server). Which means:

http://www.google.com/search?q=disabling+ipv6+linux

The first hit gives you explicit instructions on how to do it.

The first hit I get there is the Linux IPv6 Howto. I had a cursory look on it and grepped it and didn't find any reference on how to rmmod ipv6, which is crucial since I'm not that eager to reboot previously perfectly working servers.

> * Limited usefulnes of IPv6

It is getting more and more common, and most of the world doesn't live
in an ipv4 saturated country like those in Anglo North America and Europe.

Ack. To put that into perspective - how big is that community in comparison?
*t

--
--------------------------------------------------------
  Tomas Pospisek
  http://sourcepole.com -  Linux & Open Source Solutions
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