What were you trying to do that didn't work?

When setting a full tunnel VPN (OpenVPN in our case), we previously expected (in the dnsmasq backend test) that we don't have the domain of '.' set for the ethernet device but preferably only for the VPN tunnel. 

We should preserve the same behavior across all backends, so let's use this ticket to discuss this.

What is the impact of this issue to you?

Please provide the package NVR for which the bug is seen:

dnsconfd-1.7.1-2.el9

How reproducible is this bug?:

always

Steps to reproduce

1.  run dns_dnsconfd_unbound_full_tunnel_vpn from NMCI (don't forget to uncomment the check at the end of the test

Expected results

    Then device "eth2" does not have DNS domain "." should pass

Actual results

    Then device "eth2" does not have DNS domain "." check fails now