Re: [Roll] RA-DIOs and next-door destinations

[Jonathan Hui <[e-mail]>]

Hi Richard,

On Aug 3, 2009, at 8:50 AM, Richard Kelsey wrote:
> In the section on RA-DIO reception, draft-dt-roll-rpl-01
> says that a RA-DIO from a neighbor that is not a potential
> parent or a sibling should be ignored.  Is it permissable
> to remember the neighbor in order to route messages to
> it directly?  In other words, can a packet whose
> destination is a neighbor with a greater depth be sent
> directly to that neighbor?


Let me speak to your comment directly, rather than the draft.

I don't see any problem using the RA-DIO to figure out what neighbors  
are around you. One issue is that if the RA-DIO source address is a  
link-local address, it may not be so useful if you're trying to talk  
to that node using its global address. What is more useful is to allow  
including some kind of DAO in the same RA so that you know what  
addresses (other than the source address) are assigned to that node's  
interface.

--
Jonathan Hui