Installation d'un serveur dns sous ubuntu

Bonjour à tous les CCM'ers,
j'ai une nom de domain"test.lan",
je veux gérer moimeme mon sercveur de DNS,
j'ai donc installé BIND9
voici donc mon fichier named.conf .local

//
// Do any local configuration here
//

// Consider adding the 1918 zones here, if they are not used in your
// organization
//include "/etc/bind/zones.rfc1918";

zone "test.lan" {
type master;
file "/etc/bind/db.test.lan";
};
zone "1.168.192.in-addr.arpa" {
type master;
notify no;
file "/etc/bind/db.192";
};

voici mon fichier named.conf.options

options {
directory "/var/cache/bind";
allow-recursion { localhost; };
// If there is a firewall between you and nameservers you want
// to talk to, you might need to uncomment the query-source
// directive below. Previous versions of BIND always asked
// questions using port 53, but BIND 8.1 and later use an unprivileged
// port by default.

// query-source address * port 53;

// If your ISP provided one or more IP addresses for stable
// nameservers, you probably want to use them as forwarders.
// Uncomment the following block, and insert the addresses replacing
// the all-0's placeholder.

// forwarders {
// 0.0.0.0;
// };

auth-nxdomain no; # conform to RFC1035
listen-on-v6 { any; };
};

et enfin voici mon fichier db.test.com

;
; BIND data file for local loopback interface
;
$TTL 604800
@ IN SOA localhost. root.localhost. (
2 ; Serial
604800 ; Refresh
86400 ; Retry
2419200 ; Expire
604800 ) ; Negative Cache TTL
;
@ IN NS localhost.
@ IN A 127.0.0.1
@ IN AAAA ::1

le probléme quand je fait la commande "ping test.lan" il me répon par "ping: unknown host test.lan"

Quelqu'un a-t-il une idée?
merci d'avance à tous et toutes