Re: [Softwires] 4rd Address Mapping - version-01

hi Washam,
Thank you for your remarks.
Answers inline.

Le 22 sept. 2011 à 16:06, Washam Fan a écrit :

> Hi Remi,
> 
> I found this version is more clearer and simpler thanks to those
> examples and diagrams.
> 
> I have 3 comments here:
> 1. You mentioned port-less layer-4 protocol in section 6, were you
> refering to ICMP? IIRC, the echo request sequence can be seen as a
> port to some extend. But it was not mentioned in the new version,
> Would you explain why?

It is actually covered at the bottom of page 6 and beginning of page 7.
OK?

> 2. It seems to me you assumed rule ipv6 prefix length is shorter or
> equals to 64. was that your intention? (I assume yes, otherwise 4rd
> IID makes no sense)

Yes, certainly.
Rule IPV6 prefixes appear at the beginning of CE IPv6 prefixes, which have themselves at most 64 bits.

> 3. Personally, I think it might be better if you move security
> relevant text to Security Consideration section.

Debatable, IMHO, but can be discussed.

> I recall there was a
> draft/RFC regarding to tunnel security, but i can not tell now. Would
> be better to reference such a doc if it existed.

Note that this draft is only about address mappings.
- It can apply to both double translations and tunnels
- Its port-set definition algorithm, taken alone, can also apply to other scenarios;

It is IMHO up to tunnel-based drafts to cover their specific security issues. 

Regards,
RD

> 
> Thanks,
> washam
> 
> 2011/9/22 Rémi Després <despres.remi@laposte.net>:
>> Alain, all,
>> 
>> We have just posted a new version of our I-D on the proposed 4rd Address Mapping.
>> It is available at
>> www.ietf.org/id/draft-despres-softwire-4rd-addmapping-01.txt
>> 
>> Our presentation will be based on THIS version, technically simpler than version -00.
>> Major differences and their justifications will be briefly explained.
>> 
>> Regards,
>> RD
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> 