Re: [v6ops] SLAAC security concerns

Gert Doering <gert@space.net> Wed, 05 August 2020 18:27 UTC

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Date: Wed, 5 Aug 2020 20:27:21 +0200
From: Gert Doering <gert@space.net>
To: Vasilenko Eduard <vasilenko.eduard@huawei.com>
Cc: Gert Doering <gert@space.net>, Mark Smith <markzzzsmith@gmail.com>, Michael Richardson <mcr+ietf@sandelman.ca>, 6man <ipv6@ietf.org>, v6ops list <v6ops@ietf.org>
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Subject: Re: [v6ops] SLAAC security concerns
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Hi,

On Wed, Aug 05, 2020 at 06:26:54AM +0000, Vasilenko Eduard wrote:
> Hi Gert,
> SLAAC dependency on multicast is so huge that it is not possible to make it worse by 1 additional function.
> If L2 would lose ND packets, then many things in SLAAC would not work.

Yes.  Been there, cursed the vendor of the day, resorted to static ND
entries and/or got a software upgrade and/or found the necessary twiddle
to make that device well-behave.

Multicast for ND sucks about as hard as LLAs for BGP next-hops with a
TCP session over GUA.

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

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