named.conf: zone "d.localnet" in { type master; file "d/db.d.localnet"; allow-update {略}; } zone "0.168.192.IN-ADDR.ARPA" in { type master; file "db.0.168.192"; } zone "0.168.192.d.0.168.192.IN-ADDR.ARPA" in { type master; file "d/db.d.0.168.192"; allow-update {略}; }