Hello Simon, congrats for such a great piece of software.
I was wondering about the case where we have an external hosts file
with a list of ad blocking address-to-domain mappings.
Now when dnsmasq starts up
1. does it read the whole file once and possibly adds the mappings to
the dns cache so we have to specify a cache size similar to the number
of lines in the file plus a number for our approximate external dns queries
2. it doesnt and it reads the file for every single one dns query so the
cache size is only for external requests?
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