>>>>> On Wed, 21 Feb 2001 14:52:55 +0200,
>>>>> Markku Savela <[EMAIL PROTECTED]> said:
> I would like get clarification to section 5.5.3 (e): what is supposed
> to happen with the preferred lifetime? Do the two hour checks apply to
> it too? [if not, then DOS can force all addresses into deprecated
> state].
I don't think so. Section 5.5.4. of RFC 2462 says
A deprecated address SHOULD continue to be used as a source
address in existing communications, but SHOULD NOT be used in new
communications if an alternate (non-deprecated) address is available
and has sufficient scope.
Thus, even if all addresses become deprecated, you can still use all
the addresses as the source address for a new communication, because
there's no other non-deprecated addresses.
I admit the "two-hour" rule is not a complete solution against all
types of DOS attack, though.
JINMEI, Tatuya
Communication Platform Lab.
Corporate R&D Center, Toshiba Corp.
[EMAIL PROTECTED]
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