Пытаюсь поднять простой DNS

$ cat /etc/named.conf

...
zone "olimpus.local" IN {
	type master;
	file "olimpus.local.zone";
};

$ cat /var/named/olimpus.local.zone

;
;Data file for olimpus.local
;
$TTL 2D
olimpus.local. IN SOA olimpus.local. root.olimpus.local. (
2014082701; Serial
1D; Refresh
2H; Retry
1W; Expire
2D); Default TTL

IN NS delphos.olimpus.local.
IN MX 10 prometheus.olimpus.local.

delphos IN A 192.168.1.20
prometheus IN A 192.168.1.21
aphrodite IN A 192.168.1.22
delphos IN AAAA fe80::20c:29ff:fe78:4cb1
dns IN CNAME delphos
mail IN CNAME prometheus

$ sudo named-checkzone olimpus.local /var/named/olimpus.local.zone 

zone olimpus.local/IN: has no NS records
zone olimpus.local/IN: not loaded due to errors.