Pull request: 4705 fix opts

Merge in DNS/adguard-home from 4705-fix-opts to master

Updates #4705.

Squashed commit of the following:

commit d3924c443260af3d32d73bd784efff2bf8dd612e
Merge: e46198c6 e545f3bd
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Sep 5 16:57:38 2022 +0300

    Merge branch 'master' into 4705-fix-opts

commit e46198c6d8da4dcadabecfd9c1b33cc472efe612
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Mon Sep 5 16:52:20 2022 +0300

    dhcpd: immp docs

commit 1c1caeaa1b2eb642fa83aa5a88ec041af9963591
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Sat Sep 3 17:31:35 2022 +0300

    dhcpd: fix logic, imp docs

commit bc74e21b9eb79fe22170b0e02cddcbd4bf78d860
Merge: 280ad10f 1fb04376
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Fri Sep 2 18:58:52 2022 +0300

    Merge branch 'master' into 4705-fix-opts

commit 280ad10f63f954f89b42cdf206a8240f8d4de503
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Fri Sep 2 00:53:38 2022 +0300

    dhcpd: imp docs, tests

commit 600fa44f35683ba4b340843be13786e9383ead89
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Sep 1 20:24:52 2022 +0300

    dhcpd: add new opts

commit caf0cc6b370a04e6e002428b49f8d54cba105d5a
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Sep 1 18:13:02 2022 +0300

    dhcpd: log changes

commit 3d2c61d9b8fd19c8d1e4f43ac9aac3cb94cdd4d3
Author: Eugene Burkov <E.Burkov@AdGuard.COM>
Date:   Thu Sep 1 18:09:34 2022 +0300

    dhcpd: imp opts

CHANGELOG.md

@@ -22,8 +22,12 @@ and this project adheres to
 
 ### Added
 
+- New `bool`, `dur`, `u8`, and `u16` DHCP options to provide more convenience on
+  options control by setting values in a human-readable format ([#4705]).  See
+  also a [Wiki page][wiki-dhcp-opts].
+
 - New `del` DHCP option which removes the corresponding option from server's
-  response ([#4337]).
+  response ([#4337]).  See also a [Wiki page][wiki-dhcp-opts].
 
   **NOTE:** This modifier affects all the parameters in the response and not
   only the requested ones.
@@ -32,6 +36,7 @@ and this project adheres to
 
 ### Changed
 
+- The DHCP options handling is now closer to the [RFC 2131][rfc-2131] ([#4705]).
 - When the DHCP server is enabled, queries for domain names under
   `dhcp.local_domain_name` not pointing to real DHCP client hostnames are now
   processed by filters ([#4865]).
@@ -57,12 +62,14 @@ and this project adheres to
 [#4337]: https://github.com/AdguardTeam/AdGuardHome/issues/4337
 [#4403]: https://github.com/AdguardTeam/AdGuardHome/issues/4403
 [#4535]: https://github.com/AdguardTeam/AdGuardHome/issues/4535
+[#4705]: https://github.com/AdguardTeam/AdGuardHome/issues/4705
 [#4745]: https://github.com/AdguardTeam/AdGuardHome/issues/4745
 [#4850]: https://github.com/AdguardTeam/AdGuardHome/issues/4850
 [#4863]: https://github.com/AdguardTeam/AdGuardHome/issues/4863
 [#4865]: https://github.com/AdguardTeam/AdGuardHome/issues/4865
 
-[rfc-2131]: https://datatracker.ietf.org/doc/html/rfc2131
+[rfc-2131]:       https://datatracker.ietf.org/doc/html/rfc2131
+[wiki-dhcp-opts]: https://github.com/adguardTeam/adGuardHome/wiki/DHCP#config-4