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Re: [v6ops] privacy point re. unsolicited NA / router neighbor cache

Gert Doering <gert@space.net> Tue, 23 July 2019 15:35 UTC

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Date: Tue, 23 Jul 2019 17:34:56 +0200
From: Gert Doering <gert@space.net>
To: David Lamparter <equinox@diac24.net>
Cc: Gert Doering <gert@space.net>, Mark Smith <markzzzsmith@gmail.com>, v6ops list <v6ops@ietf.org>
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Subject: Re: [v6ops] privacy point re. unsolicited NA / router neighbor cache
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Hi,

On Tue, Jul 23, 2019 at 04:30:57PM +0200, David Lamparter wrote:
> I'm also confident enough in saying I don't believe any relevant switch
> or router default configurations include such broken multicast snooping
> config.  If it's broken, it's something the operator broke.  

Yeah.  That's what one would expect.  Like "protocols igmp-snooping" either
being off-by-default *or* not breaking IPv6.

But hey, out there, we have the reality zone.

Vendors will break *anything* that is not immediately obvious in their
"we tested this with IPv4 unicast!" test sets.

So yeah, if all this IPv6 multicast stuff *works*, it's not hurting much,
but it breaks often enough, across enough gear of enough vendors, that 
it's actually making IPv6 more brittle than IPv4.

Gert Doering
        -- NetMaster
-- 
have you enabled IPv6 on something today...?

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