DHCP update to external DNS...possible?

[goodwill]

Using 2.3.2-RELEASE of pfsense, is it possible to have the DHCP server update the DNS on my external Centos machine that runs BIND? And if so, any hints? I've tried just about every suggestion out there and nothing works.

I have pfsense routers at almost 20 locations and would like to have them add their leases to the single dns machine.

I just need to know if it can be done.

[kiokoman]

i don't know about 2.3.2 it's very very old but I do it on my 2.4.5-p1 and on my 2.5.0-devel

you can find how i'm doing it here https://forum.netgate.com/post/937949

[goodwill]

I looked at your post, very informative! I am still getting tsig refused error when I run enable ddns in dhcp on pfsense. I have no idea why it's being a pain. I've tried all kinds of config changes for BIND on my DNS server. I'll keep at it. Thanks!