Hi Christian,
Christian Vogt wrote:
Hi Hesham,
hope this is not too late.
Not sure but the text may suggest to create NC state even if the RS did not contain a SLLAO. In this case, it's actually not necessary to create NC state, especially if the router chooses to respond with a multicast RA. If you agree, you could change the text from this...
> [...] If there is no existing Neighbor Cache entry > for the solicitation's sender, the router creates one, installs the > link- layer address and sets its reachability state to STALE as > specified in Section 7.3.3. If there is no existing Neighbor Cache > entry and no Source Link-Layer Address option was present in the > solicitation, [...]
...to this...
> [...] If there is no existing Neighbor Cache entry > for the solicitation's sender and a Source Link-Layer Address option > was present in the solicitation, the router creates a new Neighbor > Cache entry, installs the link-layer address and sets its reachability > state to STALE as specified in Section 7.3.3. If there is no existing > Neighbor Cache entry and no Source Link-Layer Address option was > present in the solicitation, the router does either one of the > following: > > - It performs address resolution on the solicitation's sender, creates > a new Neighbor Cache entry, installs the link-layer address, sets its > reachability state to STALE as specified in Section 7.3.3, and > responds with a unicast Router Advertisement directed to the > solicitation's sender.
I'm not sure if I get this. Why would the NCE be stale if there's been an NA response for the Router's NS?
It should be REACHABLE, using existing techniques.
You could precis this to:
- It elects to perform unicast delivery, performs address resolution on Router Solicitation's sender, creating a new neighbour cache entry. It delivers a unicast Router Advertisement when neighbour discovery completes.
> - It responds with a multicast Router Advertisement. > > Whether or not a Source Link-Layer Address option is provided in the > solicitation, [...]
The rest is perfect, IMO.
Oh, just a nit: s/link- layer/link-layer/.
- Christian
Whether we need it, is another matter (to be discussed with Jinmei and others).
Greg
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