First, my network config:
192.168.24.x # my homenet
192.168.24.10 # Qnap with version (v3.5.2) installed
192.168.24.2 # VPN gateway (openSUSE 11.4)
192.168.24.254 # default gateway
The VPN Gateway uses for the vpn net the ip range 10.8.0.x
I added the vpn gateway as an additional route in my windows und linux servers and there are no problems to ping these hosts through vpn from my remote client or to use services on these hosts.
But the only host, where nothing helps is my qnap.
This is my routing table:

Is there a mistake in my table?