Merge in DNS/adguard-home from 1708-secondary-dns to master Updates #1708. Squashed commit of the following: commit 4529452e31131763f00c9c834cc95638f1a3d142 Author: Ainar Garipov <A.Garipov@AdGuard.COM> Date: Mon Nov 9 18:12:57 2020 +0300 * dhcpd: send secondary dns as well