>>>>> On Wed, 28 Jul 2004 06:58:38 -0700 (PDT),
>>>>> Erik Nordmark <[EMAIL PROTECTED]> said:
>> > Major issue: RFC 2461 actually says that in 6.2.2:
>> > - enabling IP forwarding capability (i.e., changing the system
>> > from being a host to being a router), when the interface's
>> > AdvSendAdvertisements flag is TRUE.
>>
>> > This is not how I recall the intent when we wrote the spec. But RFC 2461
>> > is consistent on this point; a router has AdvSendAdvertisements set.
>> > If it doesn't want to be a default router the RAs would
>> > have a router lifetime of zero.
>>
>> That's right, so I'm not sure how this can be a new issue. Do you
>> want additional clarification on this in rfc2461bis?
> It seems like in 2461bis-00.txt that the introduction of IsRouter in
> 6.2.1 is inconsistent with the text in 6.2.2 about AdvSendAdvertisements.
> RFC 2461 reads as if a node "advertises" itself as a router (by sending RAs
> and setting the R-flag in NAs any time AdvSendAdvertisements is set.
> Thus the "AdvSendIsRouter" is really the same as AdvSendAdvertisements.
> (Note that reusing "IsRouter" is confusing since that is the name of
> the conceptual per-neighbor cache entry variable.)
Okay, so your point is that it is redundant to introduce a separate
"AdvSendIsRouter" (or the confusing "IsRouter" variable). I
understand that.
> Thus I think we can accomplish the intended clarification by changing section
> 6.2.1 FROM
> IsRouter A flag indicating whether routing is enabled on
> this interface. Enabling routing on the interface
> would imply that a router can forward packets
> to or from the interface.
> Default: FALSE
> AdvSendAdvertisements
> A flag indicating whether or not the router sends
> periodic Router Advertisements and responds to
> Router Solicitations.
> TO
> AdvSendAdvertisements
> A flag indicating whether or not the node performs all of
> - sends periodic Router Advertisements,
> - responds to Router Solicitations, and
> - forwards packets to or from the interface.
> In short, whether or not the node behaves as a router
> on the interface.
> In particular, AdvSendAdvertisements affects whether
> the R-flag in the Neighbor Advertisement messages is set.
Works for me.
JINMEI, Tatuya
Communication Platform Lab.
Corporate R&D Center, Toshiba Corp.
[EMAIL PROTECTED]
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