Re: [DNA] Re: Reclassification of DNA Protocol and new Simple DNAprotocol

[Bernard Aboba <bernard_aboba@hotmail.com>]

>"If the addresses obtained from a previous router are no longer valid, the 
>host SHOULD NOT send a Neighbour Solicitation to that router."
>
>Does this convey what you want or Would you like some stronger text?

The SHOULD does not explain what implementations need to do.  The host can't 
just use the address (since it's no longer valid) even if the router is 
confirmed.  So either there is no point in sending the NS, or some special 
procedure needs to be invoked (e.g. waiting for RA confirmation, or 
immediately invoking DHCPv6 if that is how the address was obtained).