How to configure DNS service discovery in HAProxy plugin

[tobi]

Hi all,

I'm about to migrate from pfSense to opnSense and most of the stuff already works but currently I'm struggling how to get the DNS service discovery configured in the UI of the HAProxy plugin:

https://www.haproxy.com/de/blog/dns-service-discovery-haproxy/

In pfSense there is a HAProxy service setting called "Global DNS resolvers for haproxy" where DNS servers can be configured.
Is this configuration not available in opnSense (GUI) or do I just not find them ?