Re: [BEHAVE] I-D Action:draft-ietf-behave-v6v4-xlate-06.txt

Hi Xing,

Thanks! I still think the text in Section 3.1 of -07 needs a bit fixing. The ICMPv4 error message needs to be sent only when the next hop interface MTU is *less* that IPv4 packet size plus 20 bytes. Equal size is ok. So change "less than or equal to the total" -> "less than the total".

-Jouni

On Feb 7, 2010, at 7:46 AM, Xing Li wrote:

> jouni korhonen 写道:
> 
> You are correct. Thanks. We will make corrections in the next version.
> 
> Regards,
> 
> xing
> 
>> Hi,
>> 
>> On Jan 25, 2010, at 12:24 PM, Xing Li wrote:
>> 
>>  
>>> Hi, All,
>>> 
>>> For draft-ietf-behave-v6v4-xlate-05 during WGLC, we have 4 reviews, many
>>> active discussions on the mailing list and mails to the authors. Thanks
>>> for the reviews and comments. Here is a summary of the main issues
>>> discussed during WGLC.
>>> 
>>> (1) Discussion if translator is a router (for TTL/Hop-limit handling)
>>> Conclusion: Translator is a router. We made the wording consistent in
>>> different places of the document (in sections 1.4, 2.1, 2.7, 3.1 and
>>> 3.6. of the xlate-05)
>>> 
>>>    
>> 
>> In Section 3.1 it says:
>> 
>>   ...
>>   If the DF bit is set and the MTU of the next-hop interface is less
>>   than or equal to the total length value of the IPv4 packet minus 20,
>>   the translator MUST send an ICMPv4 "Fragmentation Needed" error
>>   message to the IPv4 source address.
>>   ...
>>  
>> Am I just reading/understanding this wrong but shouldn't the text say?
>> 
>>   ...
>>   If the DF bit is set and the MTU of the next-hop interface is less
>>   than to the total length value of the IPv4 packet plus 20,
>>   the translator MUST send an ICMPv4 "Fragmentation Needed" error
>>   message to the IPv4 source address.
>>   ...
>> 
>> -Jouni
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>> 
>> 
>>  
> 