view "internal" {
    match-clients { 192.168.0.0/16; };
    zone "test.ru" {
         type master;
         file "test.ru.int";
    };
 };
 view "external" {
    match-clients { any; };
    zone "test.ru" {
         type master;
         file "test.ru.ext";
    };
 };