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Add BLOCK_TTL documentation

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Signed-off-by: DL6ER <dl6er@dl6er.de>
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DL6ER
2021-09-27 12:09:22 +02:00
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docs/ftldns/configfile.md
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@@ -74,6 +74,13 @@ Despite `REFUSE` sounding similar to `DROP`, it turned out that many clients wil
Should Pi-hole always replies with `NXDOMAIN` to `A` and `AAAA` queries of `use-application-dns.net` to disable Firefox automatic DNS-over-HTTP?
This is following the recommendation on [https://support.mozilla.org/en-US/kb/configuring-networks-disable-dns-over-https](https://support.mozilla.org/en-US/kb/configuring-networks-disable-dns-over-https)
#### `BLOCK_TTL=2` (PR [#1173](https://github.com/pi-hole/FTL/pull/1173)) {#block_ttl data-toc-label='Blocked domains lifetime'}
FTL's internal TTL to be handed out for blocked queries. This settings allows users to select a value different from the `dnsmasq` config option `local-ttl`. This seems useful in context of locally used hostnames that are known to stay constant over long times (printers, etc.).
Note that large values may render whitelisting ineffective due to client-side caching of blocked queries.
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### Statistics settings