thank you, NightShade1.
I couldn't find out why my VIA-connection wasn't able to ping the internal network. I then enabled inter-vlan-routing on both the internal-vlan and the vlan with the default gateway for the controller and now it works.
I just don't understand why it's neccessary, because my setup is this:
internal network 10.0.1.0 (255.255.255.0).
controller ip: 10.0.1.6
via pool 10.0.1.10-10.0.1-19
network with default gateway (internet) for the controller 192.168.1.0 (255.255.255.0).
controller ip 192.168.1.250
So the VIA-client, the internal network and the controller are in 10.0.1.0.
Via-client 10.0.1.10, Internal test-machine 10.0.1.98, controller 10.0.1.6.
So why do I need to enable inter-vlan-routing? I was hoping to keep this disabled, because it might be more secure.
If it's more appropriate to start my own thread instead of reply'ing to this one, please let me know.