Pull request: 4463 ddr flag

Merge in DNS/adguard-home-wiki from 4463-ddr-support to master

Squashed commit of the following:

commit 19993d5396915fcc36181dfa3ef410f4969e3364
Merge: a6d703f 1171f98
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed Apr 27 10:38:43 2022 +0200

    Merge remote-tracking branch 'origin/master' into 4463-ddr-support

commit a6d703f925e5bce81d042c263be368fe00346287
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Tue Apr 26 15:31:02 2022 +0200

    4463 ddr flag

commit a50ba8abc8fba21558e3f6a0841699b40139eab2
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Tue Apr 26 12:35:40 2022 +0200

    4463 ddr flag

commit d371e090c81bd397c14720ccf35a0666a76d9221
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Fri Apr 22 13:48:13 2022 +0200

    4463 ddr flag

commit c62946e82e0973eb3a16bb70fd48f49bfe07365c
Author: Dimitry Kolyshev <dkolyshev@adguard.com>
Date:   Wed Apr 20 23:27:46 2022 +0200

    4463 ddr flag
Dimitry Kolyshev 2022-04-27 14:26:35 +03:00
parent 1171f98689
commit 196e306489

@ -428,6 +428,7 @@ Settings are stored in [YAML format](https://en.wikipedia.org/wiki/YAML), possib
- `parental_cache_size` — Parental Control cache size (in bytes)
- `cache_time` — Safe Browsing, Safe Search, Parental Control cache TTL
- `max_goroutines` — Max. number of parallel goroutines for processing incoming requests
- `handle_ddr` — Handle [Discovery of Designated Resolvers (DDR)][DDR] requests.
- `ipset` — List of domain-ipset_name associations for adding IP addresses of the specified domain names to an ipset list. Syntax: `DOMAIN[,DOMAIN].../IPSET_NAME[,IPSET_NAME]...`. IPv4 addresses are added to an ipset list with `ipv4` family, IPv6 addresses - to `ipv6` ipset list. ipset list must exist. This setting is supported on Linux only. This feature is similar to `--ipset` in dnsmasq.
- `upstream_timeout` (**since v0.107.0**) — The timeout for querying
upstream servers. Zero value will be rewritten with default one which is
@ -520,6 +521,7 @@ Removing an entry from settings file will reset it to the default value. Deletin
[DHCP]: https://github.com/AdguardTeam/AdGuardHome/wiki/DHCP
[DNSCrypt]: https://github.com/AdguardTeam/AdGuardHome/wiki/DNSCrypt
[`dnscrypt`]: https://github.com/ameshkov/dnscrypt
[DDR]: https://www.ietf.org/archive/id/draft-ietf-add-ddr-06.html