$ORIGIN . $TTL 604800 ; 1 week monlabo.lan IN SOA dns1.monlabo.lan. root.monlabo.lan. ( 2 ; serial 604800 ; refresh (1 week) 86400 ; retry (1 day) 2419200 ; expire (4 weeks) 604800 ; minimum (1 week) ) NS srv-dns2.monlabo.lan. NS srv-service.monlabo.lan. A 172.16.0.1 $ORIGIN monlabo.lan. dhcp CNAME srv-service dns CNAME srv-service dns1 CNAME srv-service dns2 CNAME srv-dns2 router CNAME srv-admin-jp srv-admin-jp A 172.16.0.254 srv-dns2 A 172.16.0.2 srv-service A 172.16.0.1 srvadmin CNAME srv-admin-jp srvdhcp CNAME srv-service srvdns CNAME srv-service srvdns1 CNAME srv-service srvdns2 CNAME srv-dns2