In your previous mail you wrote:
In RFC-2461 "6.3.5 Timing out Prefixes adn Default Routers" it says:
Whenever the Lifetime of an entry in the Default Router List
expires, that entry is discarded. When removing a router from the
Default Router list, the node MUST update the Destination Cache in
such a way that all entries using the router perform next-hop
determination again rather than continue sending traffic to the
(deleted) router.
=> the deletion is *only* when the previous lifetime was not 0,
i.e. there WAS an entry.
[The reason I noticed, once again TAHI test failed, because *I* only
removed those destinations that actually are related to the default
route. I didn't remove redirections, for example... I suppose I have
to fix this feature to be RFC compliant? :-]
=> you should remove redirections when the router stops to be a
default router (cf. the reference) or to be a router (no R bit in NAs).
The important detail is this is about transitions.
Regards
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