Updates #3257.
Squashed commit of the following:
commit f3c335932e365dace0720e8986c217cf6f7ae162
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Tue Jun 15 19:56:23 2021 +0300
aghnet: fix docs, names
commit 513ade2e46a9292411c9b9636437f17ee549ea5e
Merge: aa58f1dd 9f5a015f
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Tue Jun 15 19:43:24 2021 +0300
Merge branch 'master' into 3257-dhcpdc-conf
commit aa58f1ddb8065cafabc835decc5bf73ffb49e742
Author: Ainar Garipov <A.Garipov@AdGuard.COM>
Date: Tue Jun 15 17:18:19 2021 +0300
aghnet: do not expect dhcpdc.conf to exist