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From: Stefano Brivio <sbrivio@redhat.com>
To: David Gibson <david@gibson.dropbear.id.au>
Cc: Jon Maloy <jmaloy@redhat.com>, dgibson@redhat.com, passt-dev@passt.top
Subject: Re: [PATCH v2 3/9] conf: Refactor conf_print() for multi-address support
Date: Tue, 27 Jan 2026 11:30:53 +0100	[thread overview]
Message-ID: <20260127113053.1102d208@elisabeth> (raw)
In-Reply-To: <aXiAVvjPF6sfMYna@zatzit>

On Tue, 27 Jan 2026 20:07:34 +1100
David Gibson <david@gibson.dropbear.id.au> wrote:

> On Wed, Jan 21, 2026 at 02:02:09PM +0100, Stefano Brivio wrote:
> > On Sun, 18 Jan 2026 17:16:06 -0500
> > Jon Maloy <jmaloy@redhat.com> wrote:  
> [snip]
> > > @@ -1230,30 +1238,34 @@ static void conf_print(const struct ctx *c)
> > >  	}
> > >  
> > >  	if (c->ifi6) {
> > > +		bool do_slaac = !c->no_ndp || !c->no_dhcpv6;  
> > 
> > We can enable DHCPv6 and disable SLAAC though. The "SL" in SLAAC stands
> > for "stateless", DHCPv6 is stateful. We can enable both, one, or none.  
> 
> Hm.. I thought DHCPv6 was designed to require SLAAC (although in a
> kind of minimal mode).

Not really, from RFC 8415, Abstract:

   DHCPv6 can operate either in place of or in addition to
   stateless address autoconfiguration (SLAAC).

...and it works also in practice. That is, guests will work just fine
with --no-ra (but not --no-ndp, which is something else altogether).

-- 
Stefano


  reply	other threads:[~2026-01-27 10:31 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-01-18 22:16 [PATCH v2 0/9] Introduce multiple addresses Jon Maloy
2026-01-18 22:16 ` [PATCH v2 1/9] conf: Support CIDR notation for -a/--address option Jon Maloy
2026-01-19  5:02   ` David Gibson
2026-01-22  0:06     ` Jon Maloy
2026-01-27  8:42       ` David Gibson
2026-01-21  8:15   ` Stefano Brivio
2026-01-18 22:16 ` [PATCH v2 2/9] ip: Introduce unified multi-address data structures Jon Maloy
2026-01-19  7:22   ` David Gibson
2026-01-21 13:02   ` Stefano Brivio
2026-01-27  8:59     ` David Gibson
2026-01-27 10:31       ` Stefano Brivio
2026-01-18 22:16 ` [PATCH v2 3/9] conf: Refactor conf_print() for multi-address support Jon Maloy
2026-01-19  7:25   ` David Gibson
2026-01-21 13:02   ` Stefano Brivio
2026-01-27  9:07     ` David Gibson
2026-01-27 10:30       ` Stefano Brivio [this message]
2026-01-18 22:16 ` [PATCH v2 4/9] fwd: Check all configured addresses in guest accessibility functions Jon Maloy
2026-01-19  7:29   ` David Gibson
2026-01-18 22:16 ` [PATCH v2 5/9] arp: Check all configured addresses in ARP filtering Jon Maloy
2026-01-19  8:28   ` David Gibson
2026-01-18 22:16 ` [PATCH v2 6/9] conf: Allow multiple -a/--address options per address family Jon Maloy
2026-01-19  8:41   ` David Gibson
2026-01-21 19:42   ` Stefano Brivio
2026-01-18 22:16 ` [PATCH v2 7/9] pasta: Unify address configuration paths using address array Jon Maloy
2026-01-21 19:42   ` Stefano Brivio
2026-01-18 22:16 ` [PATCH v2 8/9] ip: Track observed guest IPv4 addresses in unified " Jon Maloy
2026-01-21 19:42   ` Stefano Brivio
2026-01-18 22:16 ` [PATCH v2 9/9] ip: Track observed guest IPv6 " Jon Maloy
2026-01-21 19:42   ` Stefano Brivio

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