I wonder if anyone can help me.
 Main network segment 172.20.0.0/16
 Secondary network segment 172.21.0.0/16
When on  and want to access to  I add the static route in a CMD:
route -p add 172.21.0.0 mask 255.255.0.0 172.20.3.10 metric 1
And that works fine. However, if I'm accessing  over VPN from home and try to access  by adding the same persistent static route I get the following error:
The route addition failed: Either the interface index is wrong or the gateway does not lie on the same network as the interface. Check the IP Address Table for the machine.
The problem obviously stems from the VPN but I'm lost as to how to troubleshoot. I'm using Cisco's proprietary VPN software which adds a virtual network interface and statically assigns itself an IP on install so the IP is 192.168.250.49/24. Is there any conceivable way to add a route that takes this into consideration so I can access servers on  over VPN?
Thanks in advance for any help.