Fixed: Cisco VPN Client, a Huawei 3G usb key and network sniffing

I ran into a problem widely documented on the Internet. Using a USB 3G Huawei Internet key (in particular for me it is an E1692), for some reason the vpn created with Cisco VPN Client does not work. Indeed, the vpn is regularly established, but no packet is effectively routed through the vpn itself. Googling
→ Read More: Fixed: Cisco VPN Client, a Huawei 3G usb key and network sniffing