Re: dual stack & IPv6 on by default

[itojun@iijlab.net]

>>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.

	your worry has very little to do with IPv6 itself.  this is because
	of the way we operate IPv6 today (especially in the States) where
	long-haul tunnels and excessive/nonconsiderate transit is common.

	another thing is that users would call customer support regardless
	from the protocol type they're using.  IPv4 or IPv6.  there's no
	difference.

itojun