Dynamic DNS update Questions

Kevin Darcy kcd at daimlerchrysler.com
Wed Oct 9 19:15:23 UTC 2002


Ian Young wrote:

> Hi,
>
> I've recently set up a Dynamic DNS / DHCP server. PC's etc are
> resolving host name no problem, I just have a few of questions.
>
> 1) The 'graphic.plc.uk' file (see below) is being updated Ok but the
> '192.168.0.0' file is not. I think it should be. I am I correct? If so
> what is wrong?
>
> 2) In the 'graphic.plc.uk' I have added an entry for a computer with a
> fixed IP. I am approaching this in the correct way? I think an entry
> is required in the '192.168.0.0' file.
>
> Cheers
>
> Ian Young
> Graphic PLC
>
> dhcpd.conf
> *******************************************
> ddns-domainname "graphic.plc.uk";
> ddns-update-style interim;
> ignore client-updates;
>
> key rndckey. {
>         algorithm hmac-md5;
>         secret "<Key>";
> }
>
> zone graphic.plc.uk. {
>         primary 127.0.0.1;
>         key rndckey.;
> }
>
> zone 0.168.192.in-addr.arpa. {
>         primary 127.0.0.1;
>         key rndckey.;
> }
>
> subnet 192.168.0.0 netmask 255.255.255.0{
>         range  192.168.0.130 192.168.0.254;
>         default-lease-time 1200;
>         max-lease-time 9200;
>         option domain-name              "graphic.plc.uk";
>         option domain-name-servers              192.168.0.20;
> }
> *************************************************
>
> Named.conf
> *************************************************
> options {
>         directory "/var/named";
> };
> //
> // a caching only nameserver config
> //
>         controls{
>         inet 127.0.0.1 allow{
>                 localhost;
>         }       keys{
>                 rndckey;
>         };
> };
> key "rndckey"{
>         algorithm hmac-md5;
>         secret "<key>";
> };
> zone "." {
>         type hint;
>         file "named.ca";
> };
> zone "localhost" in{
>         type master;
>         file "localhost.zone";
>         allow-update{
>                 none;
>         };
> };
> zone "graphic.plc.uk" {
>         type master;
>         file "graphic.plc.uk";
>         allow-update{
>                  key rndckey;
>         };
> };
> zone "0.0.127.in-addr.arpa" in{
>         type master;
>         file "named.local";
>         allow-update{
>                 none;
>         };
> };
> zone "0.168.192.IN-ADDR.ARPA" {
>         type master;
>         file "192.168.0.0";
>         allow-update{
>                  key rndckey;
>         };
> *************************************************
>
> graphic.plc.uk
> *************************************************
> $ORIGIN .
> $TTL 43200      ; 12 hours
> graphic.plc.uk          IN SOA  dnsdhcp.graphic.plc.uk.
> hostmaster.graphic.plc.uk. (
>                                 2002092621 ; serial
>                                 3600       ; refresh (1 hour)
>                                 15         ; retry (15 seconds)
>                                 1209600    ; expire (2 weeks)
>                                 43200      ; minimum (12 hours)
>                                 )
>                         NS      dnsdhcp.graphic.plc.uk.
>                         MX      5 dnsdhcp.graphic.plc.uk.
> $ORIGIN graphic.plc.uk.
> $TTL 600        ; 10 minutes
> C0206                   A       192.168.0.183
>                         TXT     "319f9445ed9d51a4b3d833535e11f1aad6"
> $TTL 43200      ; 12 hours
> dnsdhcp                 A       192.168.0.20
> $TTL 600        ; 10 minutes
> laptop                  A       192.168.0.133
>                         TXT     "31524457689e311f69466c2acf19be5a62"
> $TTL 43200      ; 12 hours
> star                    A       192.168.0.80
>
> *************************************************
>
> 192.168.0.0
> *************************************************
> $TTL    43200
> @               IN      SOA     dnsdhcp hostmaster.graphic.plc.uk. (
>                         2002092502 ; serial
>                         1H ; refresh
>                         15 ; retry
>                         14D ; expire
>                         12H ; default_ttl
>                         )
> 20              IN      PTR     dnsdhcp.graphic.plc.uk.
> ********************************************

This zone has no NS records, so it's presumably not loading properly and
consequently, the nameserver will reject Dynamic Update requests for it.


- Kevin




More information about the bind-users mailing list