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Date: Thu, 24 Aug 2006 20:40:09 +0200
From: Fredrik Lindberg <fli+freebsd-net@shapeshifter.se>
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To: Pat Lashley <patl@volant.org>
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Cc: freebsd-net@freebsd.org, Doug Barton <dougb@freebsd.org>
Subject: Re: Zeroconfig and Multicast DNS
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Pat Lashley wrote:
> 
> I think that I'd reverse the default on that. There should normally be 
> no harm in having an LLA address, as long as we've got the non-LLA 
> preference stuff working correctly. It is quite likely that the LLA 
> address would never actually be used; but so what?
> 

I've been thinking about that too, but I'm still not sure. The RFC
says that you shouldn't add a LLA address to an interface that
already is configured with a routeable address.

Configuring LLA via rc.conf should probably be done like DHCP, by
using a magic word in the ifconfig_ifX-line.
We could have two words, one called LLA that would run in the "forced"
mode and another LLA2 (I can't come up a good name) which would run
in the RFC compliant way.

Fredrik Lindberg