After downloading the beta 6.6 iso i decided to give it a run on my Proxmox server.
At first i never could get the server to respond after setting the IP adress manually.
Asking the IRC channel one person seem to have had the same problem, but could not help me further.
In the end, setting the virtualized network to bridge mode (instead of NAT) has resolved all the issues!
I am now happily testing NethServer