secure dynamic DNS

Noah admin2 at
Sun Oct 22 07:29:35 UTC 2006

Hi there,

I had to rebuild my gateway router which is now an ubuntu server.  I am 
trying to figure out why secure dynamic DNS is not working all that 
well.  Nothing was changed on the DNS server side, but i will include 
the configuration just in case.  Please help me figure out what I have 

I am using dhclient to send updates to my DNS server.  The error message 
says the add 'forward map' is being sent to local IP 
address and not the address of the remove DNS server. 

And here is the dhclient error:

--- snip ---

dhclient: Unable to add forward map from to 
<hosts's_local_IP_address>: timed out

--- snip ----

I dont see any message showing up in the logs on the DNS server side.

Here is the dhclient process running with all the switches:

"dhclient3 -pf /var/run/ -lf 
/var/lib/dhcp3/dhclient.eth1.leases eth1"

Here I provide the /etc/dhpc3/dhclient.conf configuration:

--- snip ---
send fqdn.fqdn "";
send fqdn.encoded on;
send fqdn.server-update off;

key {
   algorithm HMAC-MD5;
   secret "<its_secret>"

zone {
    key "";

prepend domain-name-servers;
request subnet-mask, broadcast-address, time-offset, routers,
        domain-name, domain-name-servers, host-name,
        netbios-name-servers, netbios-scope;

---- snip ----

and from the /etc/namedb/named.conf file on DNS server side:

---- snip ---

key {
   algorithm HMAC-MD5;
   secret "its_secret";

zone "" IN {
        type master;
        file "master/";
        allow-update {
        allow-query { any; };
        notify yes;

--- snip ---



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