RE: [DNA] Comments on draft-shim-dna-proactive-00.txt

[Alper Yegin <alper.yegin@samsung.com>]

> > > That may mean a single pair of messages direct to that
> > router, but I'd
> > > guess that this is fairly fast if the configuration was correct (a
> > > likely case).
> >
> > If a hint is a weak hint, and it requires that a reachability
> > test be performed, how useful is that hint? When there is no
> 
> If a host is able to suspect it remains on the same link from the
> receipt of the hint (one way is to have the APID Cache we proposed in
> place), it can just perform reachability test without a need to do DAD
> on the tentative address, which normally takes longer. Note that if
the
> router is found reachabile, the host could even reuse other addresses
> used on the link. In other words, no DAD for individual addresses is
> needed.
> 
> > hint, at most what a host would need to do is the same: send
> > a multicast RS.
> >
> 
> In the absence of a hint, the sending of the multicast RS is a problem
> might not be triggered so fast.

The link-up trigger prompts the RS to be sent. This is equivalent to the
reachability test you mentioned above.

Alper