Re: dual stack & IPv6 on by default

[Pekka Savola <pekkas@netcore.fi>]

On Mon, 10 Mar 2003, Alain Durand wrote:
> >For edification.  I have a node on a work LAN that knows nothing of IPv6.  I
> >download software and configure my node to be capable of IPv6. I manually
> >configure my interface to support IPv6.  I now ftp to an IPv6 address.  This
> >is not going to work.  But I was stupid to think it would?  Is this the kind
> >of basic mistake your also worried about?
> >
> Alternate scenario:
> We ship our system so they configure IPv6 ON by default on all interface.
> User install this machine on his v4-only network and now experiment
> larger than usual delays to connect to his favorite servers.
> User call customer support.
> This is what I worried about.

How do the delays get longer, I wonder?

Different flavors of BSD have shipped v6-enabled by default since, about
2000 or 2001, I don't remember anymore, and I've never seen anyone
complain about increased delays.

I don't think there should be any significant potential drawback *until*
the system is configured with a non-link-local address.

-- 
Pekka Savola                 "You each name yourselves king, yet the
Netcore Oy                    kingdom bleeds."
Systems. Networks. Security. -- George R.R. Martin: A Clash of Kings