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Re: Confirmation to advance: draft-ietf-6man-ipv6only-flag-05

Brian E Carpenter <brian.e.carpenter@gmail.com> Tue, 07 May 2019 23:13 UTC

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Subject: Re: Confirmation to advance: draft-ietf-6man-ipv6only-flag-05
To: Sander Steffann <sander@steffann.nl>, Bob Hinden <bob.hinden@gmail.com>
Cc: IPv6 List <ipv6@ietf.org>
References: <F8BFFCAD-E58E-4736-8A1C-56579B6F6032@employees.org> <a2465e81-a17f-ab48-efda-20fe12a70077@foobar.org> <30239E0C-C444-4A7E-8342-AEE47BF8A2BB@employees.org> <20190505200449.GB7546@vurt.meerval.net> <80073906-c3c0-1f22-9e7f-c2b349063936@gmail.com> <CAO42Z2xzVW3m0mN7jEn8SYyYCYhrufVnkfp3rBjJcijBkvucNQ@mail.gmail.com> <CACWOCC-35yVYXSRR0sRL-MBMHyOFZtJx9E9h14G8qqVh5T7qGA@mail.gmail.com> <232c1a43-0fd9-4eae-737b-260a3906f72a@gmail.com> <51F2BD2A-A590-4AF1-B8C1-FE62C9416340@steffann.nl> <8C63324F-FEF6-40BD-B918-B413CDEF9186@gmail.com> <BC988F7C-B262-4FF3-929A-02E6BCCE2266@steffann.nl>
From: Brian E Carpenter <brian.e.carpenter@gmail.com>
Message-ID: <05f75188-9bd6-ed7f-e808-b6cdb6bfbbd0@gmail.com>
Date: Wed, 08 May 2019 11:13:11 +1200
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On 08-May-19 04:54, Sander Steffann wrote:
> Hi Bob,
> 
>> Would it help if the draft said the focus is for managed networks?
> 
> Hmm. Just stating where it's supposed to be used doesn't prevent abuse in other situations. If we can actually limit the potential impact on devices on unmanaged networks then that would be great.
> 
> I understand this is not easy, as the same devices will be used on both networks.

I think we already agreed to remove the sentence about unmanaged networks. The recommended default settings for both hosts and routers would mean that the bit is never set in umanaged networks. Since the bit doesn't even exist in legacy devices, I don't see any risk factor.

     Brian

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