[Freeipa-users] DNS updates from dhcpd refused

[Mike]

Hi - FreeIPA newbie here trying to enable ddns updates from dhcpd to IPA. 
I don't know if this is an IPA or dhcpd issue but thought I'd ask here. 
I'm also not sure if TSIG the best, or only way to go.

All machines are CentOS 7 with ipa 3.3.3, actually only one machine 
involved, IPA server and dhcpd are running on the same VM.

I followed guide here:
http://www.freeipa.org/page/Howto/DNS_updates_and_zone_transfers_with_TSIG
with one exception, I used "grant dhcpupdate zonesub A;" in the ipa 
dnszone-mod command.

To test I did this:
nsupdate -k /tmp/testkey
> update add newhost.inside.lan 86400 A 10.16.1.99
> send

nsupdate works as expected, both forward and reverse records are added.

However updates from dhcpd are rejected, here's a snippet from two log 
files.  Oh and raising the trace level with 'rndc trace 9' didn't reveal 
anything useful (to me anyway).

tail -f /var/log/messages /var/named/data/named.run
==> /var/named/data/named.run <==
12-Jan-2015 20:15:02.092 client 10.16.1.10#10196/key dhcpupdate: updating 
zone 'inside.lan/IN': update failed: rejected by secure update (REFUSED)

==> /var/log/messages <==
Jan 12 20:15:02 ds01 named[11065]: client 10.16.1.10#10196/key dhcpupdate: 
updating zone 'inside.lan/IN': update failed: rejected by secure update (REFUSED)
Jan 12 20:15:02 ds01 dhcpd: No hostname for 10.16.1.203
Jan 12 20:15:02 ds01 dhcpd: DHCPREQUEST for 10.16.1.203 from 
52:54:00:4a:44:f7 (nas2) via eth0
Jan 12 20:15:02 ds01 dhcpd: DHCPACK on 10.16.1.203 to 52:54:00:4a:44:f7 
(nas2) via eth0
Jan 12 20:15:02 ds01 dhcpd: Unable to add forward map from nas2.inside.lan to 10.16.1.203: REFUSED

-- Thanks, Mike