Remove slave-to-slave notifications

Signed-off-by: Knut Ahlers <knut@ahlers.me>

named.conf

@@ -12,12 +12,6 @@ options {
   listen-on { any; };
   listen-on-v6 { none; };
 
-  allow-notify {
-    159.69.27.184; // ns1.kserver.biz
-    94.130.181.9; // ns2.kserver.biz
-    78.46.192.117; // ns3.kserver.biz
-  };
-
   // Specify a list of IPs/masks to allow zone transfers to here.
   //
   // You can override this on a per-zone basis by specifying this inside a zone
@@ -38,6 +32,7 @@ options {
   recursion no;
 
   lame-ttl 60;
+  notify no; // No notifications within slaves
 };
 {% for zone in zones %}
 zone "{{ zone }}" IN {