### MASTER ###
zone "black.com" {
        type master;
        file "/etc/named/db.black";
        allow-transfer { <SLAVE>; };
};


zone "1.in-addr.arpa" {
        type master;
        file "/etc/named/db.1";
        allow-transfer { <SLAVE>; };
};


### SLAVE ###
zone "black.com" {
        type slave;
        file "/etc/named/db.black";
        masters { <MASTER>; };
};


zone "1.in-addr.arpa" {
        type slave;
        file "/etc/named/db.1";
        masters { <MASTER>; };
};