$TTL 604800 @ IN SOA localhost. root.localhost. ( 1 ; Serial 604800 ; Refresh 86400 ; Retry 2419200 ; Expire 604800 ) ; Negative Cache TTL ; @ NS localhost. ; gateway A 192.168.90.2 www CNAME gateway dns CNAME gateway mail CNAME gateway ntp CNAME gateway proxy CNAME gateway ldap CNAME gateway ftp CNAME gateway news CNAME gateway rip CNAME gateway