deny client-updates and ddns-updates
Rafael Darder Calvo
rdarder at spiralti.com
Mon Mar 23 22:10:13 UTC 2009
Hello,
I have some doubts regarding the dhcp server behaviour when configured to do
dns updates. I have read the manuals and googled for a while but something
remains unclear to me.
Some of my current settings in dhcpd.conf:
ddns-updates on;
do-forward-updates on;
ddns-update-style interim;
ddns-domainname "xxx.com.";
ddns-rev-domainname "reverse.xxx.com.";
deny client-updates;
update-static-leases on;
update-optimization off;
use-host-decl-names on;
So, when a dhcp client sends a fqdn in its request, the server ignores the
provided fqdn and uses the "option host-name" defined in the host
declaration to update my dns server, which is fine since I put "deny
client-updates".
On the other hand, if the client doesn't send a hostname, no dns update is
performed at all, even if the host declaration has an "option host-name".
Is this the correct behaviour? I can't deduce it from the dhcpd.conf manual.
If it's the case, is there any way I can force dhcp server to update the dns
records even if no fqdn is sent in the client request?
Regards,
Rafael
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