Register DHCP Static Mappings in Unbound with dncmasq not working

[memzila]

As dnsmasq is now the default DHCP Service I have switched from KEA to dnsmasq.

But it looks like now the registering of static DHCP Mappings is no longer working.

Is this intended? Do I have switch back to KEA?
Or will this function that static mappings from dnsmasq are created in Unbound will come in the future?

[Patrick M. Hausen]

You need to use DNSmasq for DNS, too.

[DEC740airp414user]

dnsmaq (under hosts) is setup with the same data as my Kea static mappings.

both products work.  I just prefer to use Kea.

[memzila]

Sorry. A little more precise. The dns registration of static dhcp entries in unbound is not working.

Ok. Then if I understand correctly.
When I want the more advanced features from unbound like dns overrides or query forwarding for as example a nextdns integration and I like that the static dhcp entries are registered in unbound, the only way is to actual use KEA?

[nero355]

the only way is to actual use KEA?

No.

Please read https://docs.opnsense.org/manual/dnsmasq.html#dhcpv4-with-dns-registration carefully and adjust your configuration accordingly !! ;)

[JohnClark]

You're basically on the right track. If you want Unbound to handle advanced features like DNS overrides, forwarding (for something like NextDNS), and also automatically register static DHCP leases, then Unbound needs to be the resolver that receives those host entries. With the legacy ISC DHCP, that integration can be limited or inconsistent depending on setup. KEA is designed to integrate more cleanly in newer stacks, especially in systems like OPNsense, where KEA can dynamically update Unbound via proper hooks. So yes, if automatic registration of static DHCP entries in Unbound is important alongside advanced DNS features, moving to KEA is usually the cleaner and more reliable approach.

[memzila]

the only way is to actual use KEA?

No.

Please read https://docs.opnsense.org/manual/dnsmasq.html#dhcpv4-with-dns-registration carefully and adjust your configuration accordingly !! ;)

Thanks. Will probably later try to configure it like this. As I currently not have the need for any advanced dhcp options, the KEA and Unbound Way with automatic registration of static dhcp entries in unbound is the more straightforward way at the moment

[teclab]

I need to participate here, because I'am struggling with the same issue. I have upgraded to 26.1 and now using KEA DHCP together with Unbound DNS, Dnsmasq DNS & DHCP is disabled.

From the link you provided I read that Dnsmasq is required as a connector. But in Unbound I have enabled Register DHCP Static Mappings and I thought this does exactly what I wanted: Having hosts which got a DHCP lease from KEA will be served via DNS. ... but it's not working.

Does KEA only have a hook towards Dnsmasq?

BR

[Patrick M. Hausen]

Kea has a hook to Unbound for static mappings only. And none to DNSmasq if I am not mistaken.

For dynamic leases to be registered in DNS the current standard way is to use DNSmasq for DHCP and for DNS for the local domain. If you use Unbound as the client facing server and configure a forward for the local domain to DNSmasq of if you have DNSmasq answer to the clients and forward all recursive lookups to Unbound is a matter of taste, IMHO.

[LisaMT]

unbound works great with Kea DHCP.  All devices are accessed by hostnames on the network.  For those few that the names are duplicates, I add them to the override list; such as when a server has multiple names for clarity.

Dnsmasq is a last resort for me; I've used it for many years when forced to, but the other issues with it are simply not worth using it.  True if we were still running with 56k modems it was great. 

[nero355]

I need to participate here, because I'am struggling with the same issue. I have upgraded to 26.1 and now using KEA DHCP together with Unbound DNS, Dnsmasq DNS & DHCP is disabled.

Then you need to read this : https://docs.opnsense.org/manual/kea.html

From the link you provided I read that Dnsmasq is required as a connector.

That's not what it means...

But in Unbound I have enabled Register DHCP Static Mappings and I thought this does exactly what I wanted: Having hosts which got a DHCP lease from KEA will be served via DNS. ... but it's not working.

Because of this :

Kea has a hook to Unbound for static mappings only.

;)

Does KEA only have a hook towards Dnsmasq?

NOFI, but PLEASE READ the documentation first carefully before you decide to just configure something and then hope it works !!

OPNsense does some things different than you would expect so you need to take those differences in account when configuring services ;)