Hi everyone,

While I was working on my Knot-Resolver (kr) module, I wondered how I
could be able to ratelimit the trafic toward specific nameservers or
influence the NS selection algorithm, in general.

Unfortunately, the current NS election algorithm that is present in the
lib/resolve.c driver and in lib/nsrep.c does not allow a module to
register a layer to influence the NS selection.

Is there any plan to add event listeners to influence NS selection, for
instance by giving layers the opportunity to "congregate" and return a
modifier, a lot like the "favour" IPv6 modifier/variable that is done in
lib/nsrep.c:eval_addr_set?

Thanks.

Cheers,
Florian
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