Am 15.02.2014 22:37, schrieb SW:
> Yes, you are correct. That is the cause of the problem. A quick entry of my
> machine in the hosts file sorted that one out!
> 
> I'm just baffled why I have never experienced this issue before

because you did not care about network details

if your used nameserver would be sane you would not
get timeouts instead of a clear NXDOMAIN

[root@srv-rhsoft:~]$ host 192.168.0.10
Host 10.0.168.192.in-addr.arpa. not found: 3(NXDOMAIN)

your timeout looks like your DNS is trying to reslove the
PTR for a private address with your forwarder or asking
the root servers instead response NXDOMAIN

a sane nameserver has these adresses registered
_____________________________________________________________________

[root@srv-rhsoft:~]$ cat /var/named/chroot/var/named/named.empty
$TTL 86400

@ IN SOA localhost. root.localhost. (
  2              ; Serial
  3600           ; Refresh
  3600           ; Retry
  3628800        ; Expire
  3600           ; negativer TTL-Cache
);

        IN       NS     localhost.
_____________________________________________________________________

zone "1.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "2.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "3.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "4.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "5.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "6.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "7.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "8.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "9.10.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "16.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "17.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "18.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "19.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "20.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "21.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "22.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "23.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "24.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "25.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "26.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "27.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "28.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "29.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "30.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "31.172.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "0.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "127.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "254.169.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "2.0.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "100.51.198.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "113.0.203.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "255.255.255.255.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "3.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "4.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "5.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "6.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "7.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "8.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "9.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

zone "10.168.192.IN-ADDR.ARPA" {
 type            master;
 file            "named.empty";
};

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