--- Makefile.orig	2019-10-17 01:53:25.000000000 +0300
+++ Makefile	2019-10-31 12:08:44.333058000 +0300
@@ -70,7 +70,7 @@
 
 OPTIONS_DEFAULT=	DLZ_FILESYSTEM GSSAPI_NONE IDN JSON \
 			LMDB PYTHON SIGCHASE TCP_FASTOPEN
-OPTIONS_DEFINE=		DNSTAP DOCS FIXED_RRSET IDN JSON LARGE_FILE \
+OPTIONS_DEFINE=		ACCFDNS DNSTAP DOCS FIXED_RRSET IDN JSON LARGE_FILE \
 			LMDB MINCACHE PORTREVISION PYTHON QUERYTRACE \
 			SIGCHASE START_LATE TCP_FASTOPEN TUNING_LARGE GEOIP
 
@@ -94,6 +94,7 @@
 
 OPTIONS_SUB=	yes
 
+ACCFDNS_DESC=		Prefer DNS accept filter over generic one
 CRYPTO_DESC=		Choose which crypto engine to use
 DLZ_BDB_DESC=		DLZ BDB driver
 DLZ_DESC=		Dynamically Loadable Zones
@@ -120,6 +121,8 @@
 TCP_FASTOPEN_DESC=	RFC 7413 support
 TUNING_LARGE_DESC=	Tune named for large systems (**READ HELP**)
 
+ACCFDNS_EXTRA_PATCHES=	${FILESDIR}/extrapatch-interfacemgr.c
+
 DLZ_BDB_CONFIGURE_ON=	--with-dlz-bdb=yes
 DLZ_BDB_USES=		bdb