bind9 view statements

view statements could relpy different result depend on client origin
Example: private view and public view
query from public network ref. file db.test
query from private network ref. file db.test.private

view "public" {
    match-clients { !192.168.0.0/16; any; };
    recursion no;
    zone "." {
        type hint;
        file "named.root";
    };
    zone "test.com" {
        type master;
        file "db.qmio";
    };
};

view "private" {
    match-clients { 192.168.0.0/16; };
    zone "." {
        type hint;
        file "named.root";
    };
    zone "test.com" {
        type master;
        file "db.test.private";
    };
};

Note: to use view statements, all zones must be in views