Hi Jinmei,
-- See my comments inline --
----- Original Message -----
From: <JINMEI Tatuya / [EMAIL PROTECTED]@C#:H (B <[EMAIL PROTECTED]>)>
To: "Grubmair Peter" <[EMAIL PROTECTED]>
Cc: "IPV6 IETF (E-mail)" <[EMAIL PROTECTED]>
Sent: Monday, August 16, 2004 10:57 AM
Subject: Re: NUD and solicitated Router Advertisement ?
> >>>>> On Mon, 2 Aug 2004 12:24:11 +0200 ,
> >>>>> Grubmair Peter <[EMAIL PROTECTED]> said:
>
> > In page 49, chapter 4.3.4 of draft-soliman-ipv6-2461-bis-01.txt
> > it is stated that after reception of Router Advertisement, which
> > contains a source link-layer address option, a new
> > neighbor cache entry SHOULD be created.
> > The state of this new cache entry shall be STALE.
> > But to my mind, if the destination address of
> > Router advertisement packet is a unicast address of
> > the interface, I can set state to REACHABLE.
> > This is because this router advertisement must be a
> > response to my router solicitation.
>
> This is not correct, since the router advertisement may be an
> unsolicited one or a solicited one but in response to other router
> solicitations (and your solicitation may have been lost). So we
> cannot set the state to REACHABLE in this case.
>
I think that Unsolicted RA *ALWAYS* sent to "All Nodes Multicast Address -
ff02::1".
[PS : Solicited RA may also be sent to All Nodes, in case unsolicited RA is
just scheduled
after the reception of RS]
Conclusions:
1) All Unsolicited RAs are multicast destined but vice versa does not hold
good :)
2) All unicast RAs are solicited.
Am I right ?
Thank you,
O.L.N. Rao
> JINMEI, Tatuya
> Communication Platform Lab.
> Corporate R&D Center, Toshiba Corp.
> [EMAIL PROTECTED]
>
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