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From:
Crystal Kolipe <kolipe.c@exoticsilicon.com>
Subject:
Re: installer: default to IPv6 autoconf if IPv4 is not configured
To:
Klemens Nanni <kn@openbsd.org>
Cc:
Peter Hessler <phessler@theapt.org>, Andrew Hewus Fresh <andrew@afresh1.com>, OpenBSD tech <tech@openbsd.org>
Date:
Sun, 16 Nov 2025 10:21:59 +0000

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On Sun, Nov 16, 2025 at 08:16:01AM +0000, Klemens Nanni wrote:
> 16.11.2025 14:52, Peter Hessler ??????????:
> > On 2025 Nov 15 (Sat) at 20:01:03 -0800 (-0800), Andrew Hewus Fresh wrote:
> > :On Fri, Nov 14, 2025 at 04:14:06PM +0000, Klemens Nanni wrote:
> > :> When you opt out of IPv4, the only sane default for IPv6 becomes 'autoconf'
> > :> as we cannot magically guess an address and 'none' means no network at all,
> > :> which is equivalent to not configuring the interface in the first place:
> > :> 
> > :> 	 Available network interfaces are: vio0 vlan0.
> > :> 	 Network interface to configure? (name, lladdr, '?', or 'done') [vio0] 
> > :> 	 IPv4 address for vio0? (or 'autoconf' or 'none') [autoconf] none
> > :> 	-IPv6 address for vio0? (or 'autoconf' or 'none') [none] 
> > :> 	+IPv6 address for vio0? (or 'autoconf' or 'none') [autoconf] 
> > :> 
> > :> The diff is trivial and the result is typing convenience for installs
> > :> (upgrades don't run these questions) in IPv6-mostly or -only networks.
> > :> 
> > :> Feedback? OK?
> > :
> > :I didn't have time to test this, but it looks OK to me and seems like a
> > :nice idea.  I wonder if we will ever get to the point where it makes
> > :sense to always default this to on.
> > :
> > 
> > The vast majority of networks I connect to (home, work, conference) have
> > IPv6; so I would be delighted by having IPv6 autoconf as the default.
> Same here, I just thought folks would object, hence the less "invasive" mini-step.
> 
> But if there's support...

I'd also like to see IPv6 autoconf as the default.