GVC Route all Traffic through VPN
I have a NSA 2400 and Some of the users use the GVC and some L2TP.
When they are using the GVC on windows, if they try to check their IP in a website like www.myip.com, they will get their external IP address (mobile network IP, home broadband IP) instead of the fixed IP address the VPN has.
But, If they access from L2TP on windows, then the connection pass all through the VPN and when they access myip.com, they see the VPN address there.
Is there any configuration missing on my side to make the GVC send all traffic through the VPN?