I mean it's possible through /etc/pve/sdn/zone.cfg to remove the exit node.
That's strange because for controller even if I setup 10.0.1.30,10.0.1.1 like this I only see there, in controller.cfg 10.0.1.1 IP without 10.0.1.30.
Only the previous setup works with BGP announcment, exit nodes...