Re: [DNA] Sending RS probe after link-change in simple DNA

[Suresh Krishnan <suresh.krishnan@ericsson.com>]

Hi Bernard,
   Thanks for the comments. (Merging two of your mails) Please see 
responses inline.

Bernard Aboba wrote:
> 
>  > > This problem does not arise since the RS will use the tentative
>  > > option instead of the SLLAO.
>  >
>  > Ah, ok, missed that. However if the RS is sourced from a link-local we
>  > don't even need to rely on the tentative option.
>  >
>  > Why would it be useful to source the RS from a global unicast as opposed
>  > to a link-local address? In other word what would we loose by
>  > restricting the source address to a link-local? That seems like an easy
>  > and cheap fix.
> 
> [BA] Unless the tentative option is universally supported on routers, it 
> would
> probably be best not to rely on it. 

I agree with you and Julien on this and I will make the change to use a 
link local address as the source address of the RS.

Bernard Aboba wrote:
 >  > For example, assume a host has two default routers R1 and R2.
 >  > Also assume that, upon DNA initiation,
 >  > the host receives an RA with a known prefix from R1.
 >  >
 >  > At this point, will the host start utilizing R2 as a valid default 
router
 >  > or wait till NS/ NA exchange with R2/ RA from R2?
 >
 > [BA] I hope that it will wait for the NS/NA exchange (unless it receives
 > an RA from R2).

Yes, it does. It will wait for either an NS/NA exchange with R2 to 
complete or receive an RA from R2 before using R2 as a default router.

Thanks
Suresh