$TTL 300
@       IN      SOA     ns1.sb.local. admin.sb.local. (
                        2026020601      ; Serial
                        3600            ; Refresh
                        900             ; Retry
                        604800          ; Expire
                        300 )           ; Negative Cache TTL

        IN      NS      ns1.sb.local.

; Wildcard for *.gk2.sb.local
*.gk2   IN      A       192.168.255.1
gk2     IN      A       192.168.255.1

; Direct records
ns1     IN      A       192.168.255.1