Tahi "Redirected On-link" Test Case

[Eric van Gyzen]

On 10/16/2012 16:53, Eric van Gyzen wrote:
> I am currently working on a fix for kern/152791 (Tahi IPv6 Ready Logo 
> test case #169: Redirected On-link).  I have a change to add the host 
> route, and it works for test case 169.  However, the route never gets 
> removed, so all subsequent test cases fail (because they first verify 
> that the Node Under Test thinks the destination is off-link).
>
> How/When should I clean up the route?
>
> Each test case runs a common cleanup procedure, which sends a RA with 
> a Router Lifetime of zero and a Prefix Information option with a Valid 
> Lifetime and Preferred Lifetime of zero.  This deprecates the NUT's 
> only global address, by which it reaches the newly-on-link 
> destination.  However, it doesn't seem rational to use this event to 
> trigger a cleanup of the route.
>
> The only other trigger I can imagine is the transition of the 
> Destination Cache entry to the Stale state.  That also doesn't make 
> complete sense.  (It probably also wouldn't work, since in my testing, 
> test case 170 begins immediately after test case 169 ends.)
>
> I'm assuming a certain amount of familiarity (on your part) with these 
> tests.  If you'd like, I can explain them in more detail.
>
> Thanks in advance for any advice,
>
> Eric

Ignore me.  I was working with incomplete information.  The common 
cleanup procedure also includes packets that trigger NUD to delete the 
entry from the Neighbor Cache.  So, the now-obvious answer to my 
question is to delete the route on this event.

Eric