Add support for nftables

Makefile

@@ -3,22 +3,24 @@ PREFIX ?= /usr/local
 BINDIR = $(PREFIX)/bin
 SYSTEMDDIR ?= /etc/systemd
 
-all: reaction ip46tables
+all: reaction ip46tables nft46
 
 clean:
 	rm -f reaction ip46tables reaction.deb deb reaction.minisig ip46tables.minisig reaction.deb.minisig
 
-ip46tables: ip46tables.d/ip46tables.c
-	$(CC) -s -static ip46tables.d/ip46tables.c -o ip46tables
+ip46tables: helpers_c/ip46tables.c
+	$(CC) -s -static helpers_c/ip46tables.c -o ip46tables
+
+nft46: helpers_c/nft46.c
+	$(CC) -s -static helpers_c/nft46.c -o nft46
 
 reaction: app/* reaction.go go.mod go.sum
 	CGO_ENABLED=0 go build -buildvcs=false -ldflags "-s -X main.version=`git tag --sort=v:refname | tail -n1` -X main.commit=`git rev-parse --short HEAD`"
 
-reaction.deb: reaction ip46tables
-	chmod +x reaction ip46tables
+reaction.deb: reaction ip46tables nft46
+	chmod +x reaction ip46tables nft46
 	mkdir -p deb/reaction/usr/bin/ deb/reaction/usr/sbin/ deb/reaction/lib/systemd/system/
-	cp reaction deb/reaction/usr/bin/
-	cp ip46tables deb/reaction/usr/sbin/
+	cp reaction ip46tables nft46 deb/reaction/usr/bin/
 	cp config/reaction.debian.service deb/reaction/lib/systemd/system/reaction.service
 	cp -r DEBIAN/ deb/reaction/DEBIAN
 	sed -e "s/LAST_TAG/`git tag --sort=v:refname | tail -n1`/" -e "s/Version: v/Version: /" -i deb/reaction/DEBIAN/*
@@ -26,12 +28,13 @@ reaction.deb: reaction ip46tables
 	mv deb/reaction.deb reaction.deb
 	rm -rf deb/
 
-signatures: reaction.deb reaction ip46tables
-	minisign -Sm ip46tables reaction reaction.deb
+signatures: reaction.deb reaction ip46tables nft46
+	minisign -Sm ip46tables nft46 reaction reaction.deb
 
 install: all
 	install -m755 reaction $(DESTDIR)$(BINDIR)
 	install -m755 ip46tables $(DESTDIR)$(BINDIR)
+	install -m755 nft46 $(DESTDIR)$(BINDIR)
 
 install_systemd: install
 	install -m644 config/reaction.debian.service $(SYSTEMDDIR)/system/reaction.service