Re: [OPSEC] I-D Action: draft-ietf-opsec-v6-18.txt

Bob Hinden <bob.hinden@gmail.com> Sun, 22 September 2019 15:12 UTC

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From: Bob Hinden <bob.hinden@gmail.com>
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Date: Sun, 22 Sep 2019 08:12:48 -0700
In-Reply-To: <803DA885-0CB1-45E9-B784-EB051EF30158@cisco.com>
Cc: Bob Hinden <bob.hinden@gmail.com>, Brian Carpenter <brian.e.carpenter@gmail.com>, "opsec@ietf.org" <opsec@ietf.org>
To: "Eric Vyncke (evyncke)" <evyncke@cisco.com>
References: <156904975523.23067.17396839114206805258@ietfa.amsl.com> <e55e2d8a-0e3b-a80a-8fc6-bfd634d69b9b@gmail.com> <803DA885-0CB1-45E9-B784-EB051EF30158@cisco.com>
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Archived-At: <https://mailarchive.ietf.org/arch/msg/opsec/01IiQ6s0MPrC7PNr6XSq4F783ak>
Subject: Re: [OPSEC] I-D Action: draft-ietf-opsec-v6-18.txt
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Eric,

I support Brian’s proposed changes.

Bob


> On Sep 22, 2019, at 5:05 AM, Eric Vyncke (evyncke) <evyncke@cisco.com> wrote:
> 
> Brian,
> 
> Thank you for the improved text.
> 
> Expect a -19 any time soon
> 
> -éric
> 
> On 21/09/2019, 23:14, "OPSEC on behalf of Brian E Carpenter" <opsec-bounces@ietf.org on behalf of brian.e.carpenter@gmail.com> wrote:
> 
>    Hi,
> 
>    I think the ULA section is still not quite right.
> 
>> 2.1.1.  Use of ULAs
>> 
>>   Unique Local Addresses (ULAs) [RFC4193] are intended for scenarios
>>   where systems are not globally reachable, despite formally having
>>   global scope.  ULA are not similar to [RFC1918] addresses and have
>>   different use cases.  One use of ULA is described in [RFC4864] and
>>   some considerations on using ULA is described in the draft document
>>   [I-D.ietf-v6ops-ula-usage-considerations]; this document failed to
>>   have the IETF consensus and is now considered as dead.
> 
>    1. I think it is worth mentioning that ULAs should be filtered at domain
>    boundaries.
> 
>    2. Actually they are *similar* to RFC1918 - but they are not the same.
> 
>    3. I don't think there is any use in referencing a draft that you describe
>    as "dead".
> 
>    So, a possible rewrite:
> 
>    2.1.1.  Use of ULAs
> 
>       Unique Local Addresses (ULAs) [RFC4193] are intended for scenarios
>       where interfaces are not globally reachable, despite being routed
>       within a domain. They formally have global scope, but RFC 4193
>       sepcifies that they must be filtered out at domain boundaries.
>       ULAs are different from [RFC1918] addresses and have different use
>       cases. One use case is described in [RFC4864].
> 
>    Regards
>       Brian Carpenter
> 
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