zone "lan.some.domain" IN {
 type slave;
 masters { 10.1.1.1; };
 file "/var/named/lan.zone";
 check-names fail;
 allow-update { none; };
 allow-transfer { 127/8; 10/8; };
 allow-query { 127/8; 10/8; };
};
zone "10.in-addr.arpa" IN {
 type slave;
 masters { 10.1.1.1; };
 file "/var/named/10.zone";
 check-names fail;
 allow-update { none; };
 allow-transfer { 127/8; 10/8; };
 allow-query { 127/8; 10/8; };
};
zone "some.domain" IN {
 type slave;
 masters { a.b.c.11; };
 file "/var/named/some.domain.zone";
 check-names fail;
 allow-update { none; };
 allow-transfer { 127/8; 10/8; };
 allow-query { 127/8; 10/8; };
};
zone "c.b.a.in-addr.arpa" IN {
 type slave;
 masters { a.b.c.11; };
 file "/var/named/a.b.c.zone";
 check-names fail;
 allow-update { none; };
 allow-transfer { 127/8; 10/8; };
 allow-query { 127/8; 10/8; };
};