Bind löst nur FQHN auf, nicht Hostname

Hallo zusammen,

ich habe auf einem der Nameserver ein Problem welches ich nicht lokalisiert bekomme. HostOS ist Ubuntu 14.04.4 LTS. Hier die entsprechende Konfigurationen:

/etc/hosts

Code:

---

127.0.0.1      localhost
127.0.1.1      kvm01
192.168.5.1    kvm01.dental.lan kvm01

---

kvm01 ist also der Nameserver.

/etc/network/interfaces

Code:

---

# Loopback-Interface
auto lo
iface lo inet loopback

# Schnittstelle für intern
auto eth0
iface eth0 inet manual

auto intern
iface intern inet static
        address 192.168.5.1
        network 192.168.5.0
        netmask 255.255.255.0
        gateway 192.168.5.5
        dns-nameservers 192.168.5.1
        dns-search dental.lan
        bridge_ports eth0
        bridge_fd 9
        bridge_hello 2
        bridge_maxage 12
        bridge_stp off

# Schnittselle für extern
auto eth1
iface eth1 inet manual

# Bridge für das externe WAN
auto extern
iface extern inet manual
        bridge_ports eth1
        bridge_fd 9
        bridge_hello 2
        bridge_maxage 12
        bridge_stp off

---

/etc/bind/named.conf

Code:

---

include "/etc/bind/named.conf.options";
include "/etc/bind/named.conf.local";
include "/etc/bind/named.conf.default-zones";

---

/etc/bind/named.conf.local

Code:

---

include              "/etc/bind/ddns.key";

zone "dental.lan" {
    type master;
    file "/var/cache/bind/db.dental.lan";
    allow-update { key "DHCP_UPDATER"; };
};

zone "5.168.192.in-addr.arpa" IN {
    type master;
    file "/var/cache/bind/db.5.168.192";
    allow-update { key "DHCP_UPDATER"; };
};

---

/etc/bind/named.conf.local

Code:

---

include              "/etc/bind/ddns.key";

zone "dental.lan" {
    type master;
    file "/var/cache/bind/db.dental.lan";
    allow-update { key "DHCP_UPDATER"; };
};

zone "5.168.192.in-addr.arpa" IN {
    type master;
    file "/var/cache/bind/db.5.168.192";
    allow-update { key "DHCP_UPDATER"; };
};

---

/etc/bind/named.conf.default-zones

Code:

---

// prime the server with knowledge of the root servers
zone "." {
        type hint;
        file "/etc/bind/db.root";
};

// be authoritative for the localhost forward and reverse zones, and for
// broadcast zones as per RFC 1912

zone "localhost" {
        type master;
        file "/etc/bind/db.local";
};

zone "127.in-addr.arpa" {
        type master;
        file "/etc/bind/db.127";
};

zone "0.in-addr.arpa" {
        type master;
        file "/etc/bind/db.0";
};

zone "255.in-addr.arpa" {
        type master;
        file "/etc/bind/db.255";
};

---

/etc/bind/db.dental.lan

Code:

---

$TTL 172800    ; 2 days
@              IN      SOA    kvm01.dental.lan. root.dental.lan. (
                                2016040701 ; serial
                                28800      ; refresh (8 hours)
                                7200      ; retry (2 hours)
                                2419200    ; expire (4 weeks)
                                10800      ; minimum (3 hours)
                                )
@              IN      NS      kvm01.dental.lan.
                IN      MX      10 kolab.dental.lan.
                IN      A      192.168.5.1

kvm01          IN      A      192.168.5.1
ipfire          IN      A      192.168.5.5
tux            IN      A      192.168.5.6
kolab          IN      A      192.168.5.7

---

/etc/bind/db.5.168.192

Code:

---

$TTL 172800    ; 2 days
@      IN      SOA    kvm01.dental.lan. root.dental.lan. (
                                2016040701 ; serial
                                28800      ; refresh (8 hours)
                                7200      ; retry (2 hours)
                                2419200    ; expire (4 weeks)
                                172800    ; minimum (2 days)
                                )
@      IN      NS      kvm01.dental.lan.
1      IN      PTR    kvm01.dental.lan.
5      IN      PTR    ipfire.dental.lan.
6      IN      PTR    tux.dental.lan.
7      IN      PTR    kolab.dental.lan.

---

Ein Linux-Host hat die IP (statisch) 192.168.5.7 und den FQHN "kolab.dental.lan" Mache ich nun direkt am Nameserver einen:

Code:

---

root@kvm01:~# ping kolab
ping: unknown host kolab

---

klappt die Auflösung nicht. Mache ich hingegen ein:

Code:

---

root@kvm01:~# ping kolab.dental.lan
PING kolab.dental.lan (192.168.5.7) 56(84) bytes of data.
64 bytes from kolab.dental.lan (192.168.5.7): icmp_seq=1 ttl=64 time=0.136 ms
64 bytes from kolab.dental.lan (192.168.5.7): icmp_seq=2 ttl=64 time=0.163 ms
64 bytes from kolab.dental.lan (192.168.5.7): icmp_seq=3 ttl=64 time=0.162 ms
64 bytes from kolab.dental.lan (192.168.5.7): icmp_seq=4 ttl=64 time=0.174 ms
....

---

klappt alles.

Wo habe ich hier einen Fehler in meiner Konfiguration?