>>>>> On Tue, 20 Mar 2001 01:09:36 +0900,
>>>>> Jun-ichiro itojun Hagino <[EMAIL PROTECTED]> said:
> RA preference is very useful in the following very simple situations.
> your slide did not cover this, i believe this scenario is the most
> popular case.
It could also be used for a protection against misconfigured RAs. For
example, even if a user mistakenly sends unauthorized RAs (and
administrators cannot easily detect where the source of the RAs is
located), the RAs could be overriden by authorized RAs with a higher
preference.
Note that I don't argue this story can be applied for DoS attacks,
where the attacker would set the preference field to the highest
value. However, if the unauthorized RAs are just a result of
misconfiguration, we can expect that the preference value is the
default value, which can be overriden by a higher value (according to
the draft).
JINMEI, Tatuya
Communication Platform Lab.
Corporate R&D Center, Toshiba Corp.
[EMAIL PROTECTED]
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