Hi All,
Thanks to Nastov's problem description and Probie's response to that, i managed to get the issue fixed for my Customer mgmt-oVPN network.
Things i had to change in comparison to the former V2.2.6 setup:
General:
Set topology to "Subnet", on both the server (hub) side and client (spoke) side, wherever i was not set to Subnet already.
Server side:
In the OpenVPN server config fill in the tunnel network as a /24 network (in Probie's example it would be: 10.9.9.0/24)
In the Client Specific Override's i cleared the tunnel-network (<blank>) and left the ifconfig-push as it was before, including the dash.
Client side:
In the OpenVPN client config i also cleared the tunnel-network to <blank>.
In this way, every client got it's unique tunnel IP-address (/24-/32) again and i was able to get the right traffic on the right VPN-tunnel for each spoke.
Hooray! 8)</blank></blank>