$TTL 604800
@ IN SOA k8s.lan. root.k8s.lan. (
2 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
@ IN NS ns.
5 IN PTR test1.k8s.lan.
10 IN PTR test2.k8s.lan.