and tom....
what you state/propose only works if the dhcp server/process is
configured to accept the propogated returned name from the dhclient..
if the dhcp server is not configured to accept this.. you need to
update the dns (local dns) in another manner.. and this is my case.!!
i know.. a pain...
On Tue, Jan 21, 2014 at 12:45 PM, Tom Horsley <horsley1953@xxxxxxxxx> wrote:
> On Tue, 21 Jan 2014 12:20:37 -0500
> bruce wrote:
>
>> I asked, how one can go about updating a local dns using nsupdate from
>> the clients, based on the dhclient updates, or words to that effect..
>
> I know nuthin about nsupdate. I've used dhcp and bind together
> to provide dynamic DNS, but I did it a long time ago and I remember
> it being very much not fun to get it all working. The dhcp
> and the dns server have to be configured to talk to one another
> and they need keys installed on both systems to verify they
> are supposed to be able to talk, etc.
>
> Then the dhcp client on each system needs to know to tell dhcp
> it's name (which seems to be something that needs configuring
> differently on every linux distro - sometimes it is automatic,
> sometimes you have to poke config files with a stick :-).
>
> My named.conf file has something like this in the global
> options:
>
> options {
> ...
> forwarders { other DNS server IPs; };
> };
>
> Then has a:
>
> key DHCP_UPDATER {
> algorithm hmac-md5;
> secret some generated key gibberish goes here;
> };
>
> Then I have zone file decls to setup a local subnet.
>
> Then the dhcpd.conf file also has the same DHCP_UPDATER
> key section and zone definitions that mention it and
> correspond to the zones in the named.conf file.
>
> It also has this option:
>
> ddns-update-style interim;
>
> There is probably more junk that needs to be done
> because I remember taking weeks to get it all to
> work :-).
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