IPv6 BGP & kernel 4.19

Vincent Bernat bernat at luffy.cx
Tue Dec 3 14:16:44 CET 2019


 ❦  3 décembre 2019 12:48 +01, Alarig Le Lay <alarig at swordarmor.fr>:

>> It's not unexpected. A cache entry is for a /128.
>
> When I’m routing 80k prefixes I don’t want to have n /128 routes because
> someone doesn’t have 1500 of MTU. Is their a way to disable this
> behaviour?

I don't think there is. The information needs to be stored somewhere.
With IPv6, they are materialized as regular route entries tagged as
"cached routes". With IPv4, they are stored inside a route entry.
-- 
Don't stop with your first draft.
            - The Elements of Programming Style (Kernighan & Plauger)


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