man avahi-daemon:
"
If you enable publish-resolv-conf-dns-servers in avahi-daemon.conf the file /etc/resolv.conf will be read, too.
"
?
PS:
https://fedoramagazine.org/find-systems-easily-lan-mdns/
!? SELinux? Are your have a “Permission denied” entries inside of the system logs?
“https://discussion.fedoraproject.org/t/cannot-connect-to-openvpn-using-gnome/76347”