external servers in separate reverse files.

named.conf

@@ -30,3 +30,18 @@ zone "10.in-addr.arpa" {
 	file "/etc/bind/zones/lan.reverse.zone";
 	allow-update { key DNS_UPDATE; };
 };
+
+zone "86.138.11.185.in-addr.arpa" {
+	type master;
+	file "/etc/bind/zones/flexo.reverse.zone";
+};
+
+zone "145.168.214.91.in-addr.arpa" {
+	type master;
+	file "/etc/bind/zones/fender.reverse.zone";
+};
+
+zone "104.92.33.178.in-addr.arpa" {
+	type master;
+	file "/etc/bind/zones/fnog.reverse.zone";
+};

zones/fender.reverse.zone

@@ -0,0 +1,11 @@
+$TTL 1D
+@								IN	SOA	ns.slurm.ch.	root.slurm.ch. (
+			2018072001	; Serial
+			8h		; Refresh
+			2h		; Retry
+			4w		; Expire
+			2d )		; TTL Negative Cache
+
+@								IN	NS	ns.slurm.ch.
+		
+145.168.214.91.in-addr.arpa.	IN	PTR	fender

zones/flexo.reverse.zone

@@ -0,0 +1,11 @@
+$TTL 1D
+@								IN	SOA	ns.slurm.ch.	root.slurm.ch. (
+			2018072001	; Serial
+			8h		; Refresh
+			2h		; Retry
+			4w		; Expire
+			2d )		; TTL Negative Cache
+
+@								IN	NS	ns.slurm.ch.
+
+86.138.11.185.in-addr.arpa.		IN	PTR	flexo

zones/fnog.reverse.zone

@@ -0,0 +1,11 @@
+$TTL 1D
+@								IN	SOA	ns.slurm.ch.	root.slurm.ch. (
+			2018072001	; Serial
+			8h		; Refresh
+			2h		; Retry
+			4w		; Expire
+			2d )		; TTL Negative Cache
+
+@								IN	NS	ns.slurm.ch.
+
+104.92.33.178.in-addr.arpa.		IN	PTR	fnog