Re: kern/44943: 2002::/16 (6to4) addresses are preferred over native IPv6 transport

[Martin Husemann <martin%duskware.de@localhost>]

The following reply was made to PR misc/44943; it has been noted by GNATS.

From: Martin Husemann <martin%duskware.de@localhost>
To: gnats-bugs%NetBSD.org@localhost
Cc: 
Subject: Re: kern/44943: 2002::/16 (6to4) addresses are preferred over native 
IPv6 transport
Date: Sun, 8 May 2011 10:11:36 +0200

 On Sat, May 07, 2011 at 01:50:00PM +0000, pettai%nordu.net@localhost wrote:
 
 > NetBSD seems to pref 2002::/16 6to4 addresses (which is a tunnel
 > mechanism) over native IPv6 transport if both are given for a remote
 > host. This is broken behavior now days, then native IPv6 is deployed on
 > a much wider scale than before. (The 6to4 2002::/16 RFC is under
 > discussion to become a historic document in the IETF)
 
 This sounds like a misunderstanding. NetBSD itself does not prefer any
 address over any other. Applications typically just try all results
 returned by the resolver in the (more or less) random order they arrive.
 
 So this depends mostly on the nameserver answering your question.
 
 You could check the "sortlist" option in /etc/resolv.conf - but I don't know
 if/how that works for v6 addresses.
 
 Besides, why do you realy care?
 
 Martin