How to define an IP to a internal service

Hi,
It looks like that it is not possible to define an Interface/IP to an service.
e.g.
using RADIUS it is not possible to use the eth1 interface. It uses always eth0.
The same for the ACC.
Ugly is the same when using VPN withe a couple of SA. The source IP' of the Astaro changes then.

Using a secondary I address on the external interface is not beeing used with outbound connection.
Any ideas for that or is that an issue for features.astaro.com?

BR
ciscoman