>>>>> On Mon, 22 Apr 2002 13:33:11 -0700,
>>>>> "Richard Draves" <[EMAIL PROTECTED]> said:
>> E.g are you able to send a packet like:
>>
>> src=global1
>> dst=globalA
>> routing header=site_localA, segments left=1
>>
>> which would be translated at globalA to:
>>
>> src=global1
>> dst=site_localA
>> routing header=globalA, segments left=0 ?
> To prevent this I have a check when processing routing headers - when
> swapping the old destination and the new destination, it's an error if
> the new destination has smaller scope than the old destination.
> I think it's important that when a packet arrives at its final
> destination, if that destination is link-local then the receiving
> application can know that the packet originated on-link, and if the
> destination is site-local then the application can know that the packet
> originated within the site.
I tend to agree, because otherwise we do not have a guarantee that the
"response" packet can be delivered to the originating node without
breaking the destination zone (of the original packet). (Of course,
there is always a possibility to break a zone boundary when the scope
types of source and destination are different. But the possibility
usually depends on the intra-zone routing whereas in this case there
can be an essential breakage.)
Can we agree on the restriction? Then I'll add it to the next version
of the draft.
JINMEI, Tatuya
Communication Platform Lab.
Corporate R&D Center, Toshiba Corp.
[EMAIL PROTECTED]
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